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OBD II - Diagnostics - Mega Thread

81K views 188 replies 53 participants last post by  mangham54 
#1 ·
OK, there are lots of OBD questions popping up. how about we have a mega thread just for OBD discussion and to share readings etc. A "one stop shop" if you like.

Perhaps we can llis ones we ahve bought and how good they are and share abnormal readings etc. A lot of knowledge in tis area has the potential to save members money at the garage. I know its not T4 , but it can help identify simple problems


I will start with this rather good info I found tongiht telling you what all the sensor readings mean.

OBD-II Sensor Description
This is a complete list of the sensors that OBD Gauge supports. Only those sensors that are also
supported by the connected vehicle are displayed.

Throttle Position
This sensor generates a voltage proportional to instantaneous throttle position (0-90°). It is
measured in degrees. Usually a closed throttle will read about 10° and a fully open throttle about
79.3° to 90°. This sensor is used to determine the pos ition of the throttle plate. It informs the
engine management computer if the throttle plate is closed, wide open or partially open. The
sensor is basically a potentiometer providing an output voltage. The closed throttle position may
be used to determine when the accelerator pedal is not being pressed.

Engine RPM
This sensor generates a pulse for every revolution of the engine. It is measured in revolutions per
minute. Usually the sensor is a pick up coil looking for a unique keyed tooth on an engine timing
rotor. Values range from 0 upwards.

Vehicle Speed
The vehicle speed sensor tells the vehicle’s engine management computer how fast the vehicle is
moving. Speed is measured in kilometers per hour (km/h) or miles per hour (MPH). The vehicle’s
engine management computer adjusts the injector pulse times to maintain the proper fuel mixture
at any speed and load. It also sends a signal to the speedometer and, in most cases, to the
cruise control computer.

Calculated Load Value
The vehicle’s engine management computer generates a value of between 0 to 100% to
represent current loading.

Ignition Timing Advance
This system is used on spark ignition and combustion ignition engines to start the ignition event
earlier by controlling the ignition or fuel system. As engine speed increases, start of ignition or
start of injection must occur earlier in order to result in the most effective downward thrust on the
piston during the power stroke. The vehicle’s ECU generates this value, measured in degrees
(−64° to 63.5°).

Intake Air Pressure
This sensor creates a signal that is proportional to the average pressure in the intake manifold.
The pressure should be low and fairly steady at idle and light loads and will go higher as the load
increases, up to atmospheric pressure.

Intake Air Flow Rate
This sensor provides a voltage signal, corresponding to the air mass entering the engine. The
electrical signal is transmitted to the engine control module and is used to determine the required
fuelling for petrol engines and for exhaust gas recirculation (EGR) control on diesel engines. It is
typically mounted inside the clean air duct (usually at the exit of the air cleaner). Modern vehicles
use a ‘hot wire anemometer” sensor for this measurement.

Short Term Fuel Trim
(STFT) – The neutral value for the short term fuel trim is 0%. Any deviation from 0% indicates the
short term fuel trim is changing the injector pulse width. The amount of pulse width change
depends on how far the short term fuel trim value is from 0%. The short term fuel trim is rich at -
99% and lean at +99%.
The short term fuel trim changes the pulse width by varying the Closed Loop factor of the base
pulse width equation. As the vehicle’s engine management computer monitors the oxygen
sensors input, it is constantly varying the short term fuel trim value. The value is updated very
quickly. The short term fuel trim only corrects for short term mixture trends. The correction of long
term mixture trends is the function of long term fuel trim.

Long Term Fuel Trim
(LTFT) – As the engine operating conditions change, the vehicle’s engine management computer
will determine what long term fuel trim factor to use in the base pulse width equation.
If the short term fuel trim is far enough from 0%, the vehicle’s engine management computer will
change the long term fuel trim value. Once the LTFT value is changed, it should force the STFT
back toward 0%. If the mixture is still not correct, the STFT will continue to have a large deviation
from the ideal 0%. In this case, the LTFT will continue to change until the STFT becomes
balanced. Both the STFT and LTFT have limits which vary by calibration. If the mixture is off
enough so that LTFT reaches the limit of its control and still cannot correct the condition, the
STFT would also go to its limit of control in the same direction. If the mixture is still not corrected
by both STFT and LTFT at their extreme values, a Fuel Trim DTC will likely result.

Air Temperature
The intake air temperature sensor tells the computer the temperature of the incoming air. Since
cold air is denser than warm air, it needs more fuel to achieve the ideal air to fuel ratio. To do this,
the computer will open the injectors for a longer period of time.


Coolant Temperature

This sensor measures the temperature of the engine. When the engine is cold, it needs more fuel
to operate correctly. In very cold conditions, a large quantity of fuel is needed to start the car. This
is called “Cold Start Enrichment” and replaces the function of a choke.
Coolant Temperature
This sensor measures the temperature of the engines coolant. Normally about 82 to 104°C (180
to 220°F) on most cars once the engine has warmed up .

Fuel Pressure (not avialble on F/TF?)
This sensor measures the regulated pressure on the fuel rail. This is a very important value; the
fuel/air ratio is determined by length of time the fuel injector is pulsed on. If the fuel pressure is
not constant, then the ECU cannot maintain the correct fuel/air ratio, causing emissions or
performance problems.
Most regulators have a static pressure of between 38 and 44 PSI.

Oxygen Sensors

All modern vehicles have multiple oxygen sensors. The number of sensors is always even. The
sensors are part of the emissions control system and feed data to the engine management
computer. The goal of the sensor is to help the engine run as efficiently as possible and also to
produce as few emissions as possible.
A gasoline engine burns fuel in the presence of oxygen. An oxygen/fuel ratio of approximately
14.7:1 is ideal (stoichiometry). The ratio depends on the amount of hydrogen and carbon found in
a given amount of fuel. If there is less air than this ideal ratio, then there will be fuel left over after
combustion. This is called a rich mixture. Rich mixtures are bad because the unburned fuel
creates pollution.
If there is more air than this perfect ratio, then there is excess oxygen. This is called a lean
mixture. A lean mixture tends to produce more nitrogen-oxide pollutants, and in some cases, it
can cause poor performance and even engine damage.
An oxygen sensor is positioned in the exhaust pipe and can detect rich and lean mixtures. The
mechanism in most sensors involves a chemical reaction that generates a voltage. The engine's
computer looks at the voltage to determine if the mixture is rich or lean, and adjusts the amount of
fuel entering the engine accordingly.
When the oxygen sensor fails, the computer can no longer sense the air/fuel ratio. This sensor is
much more complicated than the other sensors and deserves a more detailed explanation.
Basically, the oxygen sensor indicates the presence or absence of oxygen in the exhaust stream.
The ECU, in order to keep emissions low, adjusts the fuel/air ratio at stoichiometry, the exact
mixture which will completely burn all fuel with the oxygen present in the cylinder, leaving no fuel
or oxygen in the exhaust.
As the fuel/air ratio deviates from stoichiometry, then either oxygen or hydrocarbons (unburned
fuel) will be present in the exhaust. The oxygen sensor produces a low voltage (< 0.1V) when
oxygen is present in the exhaust, and produces a high voltage (> 0.8V) when there is no oxygen
in the exhaust. The ECU uses the voltage output from the oxygen sensor to make slight
adjustments to the amount of fuel injected to keep the fuel/air ratio near stoichiometry. It does this
by increasing the fuel to get a high reading, meaning that there is no oxygen in the exhaust, the
slightly decreasing the amount of fuel until the oxygen sensor reading drops low. This process
goes on continuously to keep the average fuel/air ratio as close to stoichiometry as possible.
 
#39 ·
Hi All

I have just found a full list of OBD11 Codes on a web site. I have talked to them to see if I can post it on here but the MD is on his holidays. So as soon as I can i will talk him into letting me do so with full credits of course.

So If any one wants to know what your fault codes mean I can find out.



I was also talking to them about servicing the TF & these are the prices quoted inc VAT

Full Service (less Air Filter I've just changed it) £378.00 Inc Cam belt change!!

Cam Belt Change by itself £179.00

Add to either £90 for a Water pump change.

Well experieced MG-Rover Engineers so even better

Sounds good to me

Mike
 
#48 ·
Hi,

Received my ScanGauge2 yesterday, I'm very pleased.

I fitted it above the rear view mirror, pipping the cable around the trim above the windscreen and down behind the O/S A-post trim and under the dash, then securing the plug into my Diagnostic socket.

- I secured the gauge to the central windscreen trim using a strip of velcro the length of the Gauge although I think double-sided tape might be better.

- As for the cable along the central windscreen trim leading to the O/S A-post, I need something to secure it better. I want it easy to remove if I need to check out another car... so I don't particulary want to put it behind the trim. Placing part of the cable behind the A-post was simple due to a bit of a gap...as was putting it behind the dash - easy removed.

PS, I'd put a photo on.. but I don't think I could attach it to this thread...?


Where have you fitted your ScanGauge2?
 
#51 · (Edited)
If you have a laptop, Avon is only £125, I plugged into a Mems2j the other day no problem. Dont be put off by the online price list, I am sure they dont yet list the MEMS3 lite version that I have which gives codes, clears, live date and ecu/immobiliser code reading and re-matching.
Here are some MEMS3 codes I have, unfortunately the list is incomplete, I would so, so, so love to have a copy of the official mgr list. If anyone has the complete list, I am sure that some people must have them, please please please let me have a copy!!!! In particular I would love to see MGR's description for P1520.
As you can probably see MGR's codes above P1000 bear little resemblence to 'generic' listings..........

"00 01""P0001""Fuel Volume Regulator Control Circuit/Open"
"00 02""P0002""Fuel Volume Regulator Control Circuit Range/Performance"
"00 03""P0003""Fuel Volume Regulator Control Circuit Low"
"00 04""P0004""Fuel Volume Regulator Control Circuit High"
"00 05""P0005""Fuel Shutoff Valve A Control Circuit/Open"
"00 06""P0006""Fuel Shutoff Valve A Control Circuit Low"
"00 07""P0007""Fuel Shutoff Valve A Control Circuit High"
"00 08""P0008""Engine Position System Performance"
"00 09""P0009""Engine Position System Performance"
"00 10""P0010""A Camshaft Position Actuator Circuit"
"00 11""P0011""A Camshaft Position - Timing Over-Advanced or System Performance"
"00 12""P0012""A Camshaft Position - Timing Over-Retarded"
"00 13""P0013""B Camshaft Position - Actuator Circuit"
"00 14""P0014""B Camshaft Position - Timing Over-Advanced or System Performance"
"00 15""P0015""B Camshaft Position - Timing Over-Retarded"
"00 16""P0016""Crankshaft Position - Camshaft Position Correlation"
"00 17""P0017""Crankshaft Position - Camshaft Position Correlation"
"00 18""P0018""Crankshaft Position - Camshaft Position Correlation"
"00 19""P0019""Crankshaft Position - Camshaft Position Correlation"
"00 20""P0020""A Camshaft Position Actuator Circuit"
"00 21""P0021""A Camshaft Position - Timing Over-Advanced or System Performance"
"00 22""P0022""A Camshaft Position - Timing Over-Retarded"
"00 23""P0023""B Camshaft Position - Actuator Circuit"
"00 24""P0024""B Camshaft Position - Timing Over-Advanced or System Performance"
"00 25""P0025""B Camshaft Position - Timing Over-Retarded"
"00 26""P0026""Intake Valve Control Solenoid Circuit Range/Performance"
"00 27""P0027""Exhaust Valve Control Solenoid Circuit Range/Performance"
"00 28""P0028""Intake Valve Control Solenoid Circuit Range/Performance"
"00 29""P0029""Exhaust Valve Control Solenoid Circuit Range/Performance"
"00 30""P0030""HO2S Heater Control Circuit"
"00 31""P0031""HO2S Heater Control Circuit Low"
"00 32""P0032""HO2S Heater Control Circuit High"
"00 33""P0033""Turbo Charger Bypass Valve Control Circuit"
"00 34""P0034""Turbo Charger Bypass Valve Control Circuit Low"
"00 35""P0035""Turbo Charger Bypass Valve Control Circuit High"
"00 36""P0036""HO2S Heater Control Circuit"
"00 37""P0037""HO2S Heater Control Circuit Low"
"00 38""P0038""HO2S Heater Control Circuit High"
"00 39""P0039""Turbo/Super Charger Bypass Valve Control Circuit Range/Performance"
"00 40""P0040""O2 Sensor Signals Swapped Bank 1 Sensor 1/ Bank 2 Sensor 1"
"00 41""P0041""O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2"
"00 42""P0042""HO2S Heater Control Circuit"
"00 43""P0043""HO2S Heater Control Circuit Low"
"00 44""P0044""HO2S Heater Control Circuit High"
"00 45""P0045""Turbo/Super Charger Boost Control Solenoid Circuit/Open"
"00 46""P0046""Turbo/Super Charger Boost Control Solenoid Circuit Range/Performance"
"00 47""P0047""Turbo/Super Charger Boost Control Solenoid Circuit Low"
"00 48""P0048""Turbo/Super Charger Boost Control Solenoid Circuit High"
"00 49""P0049""Turbo/Super Charger Turbine Overspeed"
"00 50""P0050""HO2S Heater Control Circuit"
"00 51""P0051""HO2S Heater Control Circuit Low"
"00 52""P0052""HO2S Heater Control Circuit High"
"00 53""P0053""HO2S Heater Resistance"
"00 54""P0054""HO2S Heater Resistance"
"00 55""P0055""HO2S Heater Resistance"
"00 56""P0056""HO2S Heater Control Circuit"
"00 57""P0057""HO2S Heater Control Circuit Low"
"00 58""P0058""HO2S Heater Control Circuit High"
"00 59""P0059""HO2S Heater Resistance"
"00 60""P0060""HO2S Heater Resistance"
"00 61""P0061""HO2S Heater Resistance"
"00 62""P0062""HO2S Heater Control Circuit"
"00 63""P0063""HO2S Heater Control Circuit Low"
"00 64""P0064""HO2S Heater Control Circuit High"
"00 65""P0065""Air Assisted Injector Control Range/Performance"
"00 66""P0066""Air Assisted Injector Control Circuit or Circuit Low"
"00 67""P0067""Air Assisted Injector Control Circuit High"
"00 68""P0068""MAP/MAF - Throttle Position Correlation"
"00 69""P0069""Manifold Absolute Pressure - Barometric Pressure Correlation"
"00 70""P0070""Ambient Air Temperature Sensor Circuit"
"00 71""P0071""Ambient Air Temperature Sensor Range/Performance"
"00 72""P0072""Ambient Air Temperature Sensor Circuit Low"
"00 73""P0073""Ambient Air Temperature Sensor Circuit High"
"00 74""P0074""Ambient Air Temperature Sensor Circuit Intermittent"
"00 75""P0075""Intake Valve Control Solenoid Circuit"
"00 76""P0076""Intake Valve Control Solenoid Circuit Low"
"00 77""P0077""Intake Valve Control Solenoid Circuit High"
"00 78""P0078""Exhaust Valve Control Solenoid Circuit"
"00 79""P0079""Exhaust Valve Control Solenoid Circuit Low"
"00 80""P0080""Exhaust Valve Control Solenoid Circuit High"
"00 81""P0081""Intake Valve Control Solenoid Circuit"
"00 82""P0082""Intake Valve Control Solenoid Circuit Low"
"00 83""P0083""Intake Valve Control Solenoid Circuit High"
"00 84""P0084""Exhaust Valve Control Solenoid Circuit"
"00 85""P0085""Exhaust Valve Control Solenoid Circuit Low"
"00 86""P0086""Exhaust Valve Control Solenoid Circuit High"
"00 87""P0087""Fuel Rail/System Pressure - Too Low"
"00 88""P0088""Fuel Rail/System Pressure - Too High"
"00 89""P0089""Fuel Pressure Regulator 1 Performance"
"00 90""P0090""Fuel Pressure Regulator 1 Control Circuit"
"00 91""P0091""Fuel Pressure Regulator 1 Control Circuit Low"
"00 92""P0092""Fuel Pressure Regulator 1 Control Circuit High"
"00 93""P0093""Fuel System Leak Detected - Large Leak"
"00 94""P0094""Fuel System Leak Detected - Small Leak"
"00 95""P0095""Intake Air Temperature Sensor 2 Circuit"
"00 96""P0096""Intake Air Temperature Sensor 2 Circuit Range/Performance"
"00 97""P0097""Intake Air Temperature Sensor 2 Circuit Low"
"00 98""P0098""Intake Air Temperature Sensor 2 Circuit High"
"00 99""P0099""Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic"
"01 00""P0100""Mass or Volume Air Flow Circuit"
"01 01""P0101""Mass or Volume Air Flow Circuit Range/Performance"
"01 02""P0102""Mass or Volume Air Flow Circuit Low Input"
"01 03""P0103""Mass or Volume Air Flow Circuit High Input"
"01 04""P0104""Mass or Volume Air Flow Circuit Intermittent"
"01 05""P0105""Manifold Absolute Pressure/Barometric Pressure Circuit"
"01 06""P0106""Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance"
"01 07""P0107""Manifold Absolute Pressure/Barometric Pressure Circuit Low Input"
"01 08""P0108""Manifold Absolute Pressure/Barometric Pressure Circuit High Input"
"01 09""P0109""Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent"
"01 10""P0110""Intake Air Temperature Sensor 1 Circuit"
"01 11""P0111""Intake Air Temperature Sensor 1 Circuit Range/Performance"
"01 12""P0112""Intake Air Temperature Sensor 1 Circuit Low"
"01 13""P0113""Intake Air Temperature Sensor 1 Circuit High"
"01 14""P0114""Intake Air Temperature Sensor 1 Circuit Intermittent"
"01 15""P0115""Engine Coolant Temperature Circuit"
"01 16""P0116""Engine Coolant Temperature Circuit Range/Performance"
"01 17""P0117""Engine Coolant Temperature Circuit Low"
"01 18""P0118""Engine Coolant Temperature Circuit High"
"01 19""P0119""Engine Coolant Temperature Circuit Intermittent"
"01 20""P0120""Throttle/Pedal Position Sensor/Switch A Circuit"
"01 21""P0121""Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance"
"01 22""P0122""Throttle/Pedal Position Sensor/Switch A Circuit Low"
"01 23""P0123""Throttle/Pedal Position Sensor/Switch A Circuit High"
"01 24""P0124""Throttle/Pedal Position Sensor/Switch A Circuit Intermittent"
"01 25""P0125""Insufficient Coolant Temperature for Closed Loop Fuel Control"
"01 26""P0126""Insufficient Coolant Temperature for Stable Operation"
"01 27""P0127""Intake Air Temperature Too High"
"01 28""P0128""Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)"
"01 29""P0129""Barometric Pressure Too Low"
"01 30""P0130""O2 Sensor Circuit"
"01 31""P0131""O2 Sensor Circuit Low Voltage"
"01 32""P0132""O2 Sensor Circuit High Voltage"
"01 33""P0133""O2 Sensor Circuit Slow Response"
"01 34""P0134""O2 Sensor Circuit No Activity Detected"
"01 35""P0135""O2 Sensor Heater Circuit"
"01 36""P0136""O2 Sensor Circuit"
"01 37""P0137""O2 Sensor Circuit Low Voltage"
"01 38""P0138""O2 Sensor Circuit High Voltage"
"01 39""P0139""O2 Sensor Circuit Slow Response"
"01 40""P0140""O2 Sensor Circuit No Activity Detected"
"01 41""P0141""O2 Sensor Heater Circuit"
"01 42""P0142""O2 Sensor Circuit"
"01 43""P0143""O2 Sensor Circuit Low Voltage"
"01 44""P0144""O2 Sensor Circuit High Voltage"
"01 45""P0145""O2 Sensor Circuit Slow Response"
"01 46""P0146""O2 Sensor Circuit No Activity Detected"
"01 47""P0147""O2 Sensor Heater Circuit"
"01 48""P0148""Fuel Delivery Error"
"01 49""P0149""Fuel Timing Error"
"01 50""P0150""O2 Sensor Circuit"
"01 51""P0151""O2 Sensor Circuit Low Voltage"
"01 52""P0152""O2 Sensor Circuit High Voltage"
"01 53""P0153""O2 Sensor Circuit Slow Response"
"01 54""P0154""O2 Sensor Circuit No Activity Detected"
"01 55""P0155""O2 Sensor Heater Circuit"
"01 56""P0156""O2 Sensor Circuit"
"01 57""P0157""O2 Sensor Circuit Low Voltage"
"01 58""P0158""O2 Sensor Circuit High Voltage"
"01 59""P0159""O2 Sensor Circuit Slow Response"
"01 60""P0160""O2 Sensor Circuit No Activity Detected"
"01 61""P0161""O2 Sensor Heater Circuit"
"01 62""P0162""O2 Sensor Circuit"
"01 63""P0163""O2 Sensor Circuit Low Voltage"
"01 64""P0164""O2 Sensor Circuit High Voltage"
"01 65""P0165""O2 Sensor Circuit Slow Response"
"01 66""P0166""O2 Sensor Circuit No Activity Detected"
"01 67""P0167""O2 Sensor Heater Circuit"
"01 68""P0168""Fuel Temperature Too High"
"01 69""P0169""Incorrect Fuel Composition"
"01 70""P0170""Fuel Trim"
"01 71""P0171""System Too Lean"
"01 72""P0172""System Too Rich"
"01 73""P0173""Fuel Trim"
"01 74""P0174""System Too Lean"
"01 75""P0175""System Too Rich"
"01 76""P0176""Fuel Composition Sensor Circuit"
"01 77""P0177""Fuel Composition Sensor Circuit Range/Performance"
"01 78""P0178""Fuel Composition Sensor Circuit Low"
"01 79""P0179""Fuel Composition Sensor Circuit High"
"01 80""P0180""Fuel Temperature Sensor A Circuit"
"01 81""P0181""Fuel Temperature Sensor A Circuit Range/Performance"
"01 82""P0182""Fuel Temperature Sensor A Circuit Low"
"01 83""P0183""Fuel Temperature Sensor A Circuit High"
"01 84""P0184""Fuel Temperature Sensor A Circuit Intermittent"
"01 85""P0185""Fuel Temperature Sensor B Circuit"
"01 86""P0186""Fuel Temperature Sensor B Circuit Range/Performance"
"01 87""P0187""Fuel Temperature Sensor B Circuit Low"
"01 88""P0188""Fuel Temperature Sensor B Circuit High"
"01 89""P0189""Fuel Temperature Sensor B Circuit Intermittent"
"01 90""P0190""Fuel Rail Pressure Sensor Circuit"
"01 91""P0191""Fuel Rail Pressure Sensor Circuit Range/Performance"
"01 92""P0192""Fuel Rail Pressure Sensor Circuit Low"
"01 93""P0193""Fuel Rail Pressure Sensor Circuit High"
"01 94""P0194""Fuel Rail Pressure Sensor Circuit Intermittent"
"01 95""P0195""Engine Oil Temperature Sensor"
"01 96""P0196""Engine Oil Temperature Sensor Range/Performance"
"01 97""P0197""Engine Oil Temperature Sensor Low"
"01 98""P0198""Engine Oil Temperature Sensor High"
"01 99""P0199""Engine Oil Temperature Sensor Intermittent"
"02 00""P0200""Injector Circuit/Open"
"02 01""P0201""Injector Circuit/Open - Cylinder 1"
"02 02""P0202""Injector Circuit/Open - Cylinder 2"
"02 03""P0203""Injector Circuit/Open - Cylinder 3"
"02 04""P0204""Injector Circuit/Open - Cylinder 4"
"02 05""P0205""Injector Circuit/Open - Cylinder 5"
"02 06""P0206""Injector Circuit/Open - Cylinder 6"
"02 07""P0207""Injector Circuit/Open - Cylinder 7"
"02 08""P0208""Injector Circuit/Open - Cylinder 8"
"02 09""P0209""Injector Circuit/Open - Cylinder 9"
"02 10""P0210""Injector Circuit/Open - Cylinder 10"
"02 11""P0211""Injector Circuit/Open - Cylinder 11"
"02 12""P0212""Injector Circuit/Open - Cylinder 12"
"02 13""P0213""Cold Start Injector 1"
"02 14""P0214""Cold Start Injector 2"
"02 15""P0215""Engine Shutoff Solenoid"
"02 16""P0216""Injector/Injection Timing Control Circuit"
"02 17""P0217""Engine Coolant Over Temperature Condition"
"02 18""P0218""Transmission Fluid Over Temperature Condition"
"02 19""P0219""Engine Overspeed Condition"
"02 20""P0220""Throttle/Pedal Position Sensor/Switch B Circuit"
"02 21""P0221""Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance"
"02 22""P0222""Throttle/Pedal Position Sensor/Switch B Circuit Low"
"02 23""P0223""Throttle/Pedal Position Sensor/Switch B Circuit High"
"02 24""P0224""Throttle/Pedal Position Sensor/Switch B Circuit Intermittent"
"02 25""P0225""Throttle/Pedal Position Sensor/Switch C Circuit"
"02 26""P0226""Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance"
"02 27""P0227""Throttle/Pedal Position Sensor/Switch C Circuit Low"
"02 28""P0228""Throttle/Pedal Position Sensor/Switch C Circuit High"
"02 29""P0229""Throttle/Pedal Position Sensor/Switch C Circuit Intermittent"
"02 30""P0230""Fuel Pump Primary Circuit"
"02 31""P0231""Fuel Pump Secondary Circuit Low"
"02 32""P0232""Fuel Pump Secondary Circuit High"
"02 33""P0233""Fuel Pump Secondary Circuit Intermittent"
"02 34""P0234""Turbo/Super Charger Overboost Condition"
"02 35""P0235""Turbo/Super Charger Boost Sensor A Circuit"
"02 36""P0236""Turbo/Super Charger Boost Sensor A Circuit Range/Performance"
"02 37""P0237""Turbo/Super Charger Boost Sensor A Circuit Low"
"02 38""P0238""Turbo/Super Charger Boost Sensor A Circuit High"
"02 39""P0239""Turbo/Super Charger Boost Sensor B Circuit"
"02 40""P0240""Turbo/Super Charger Boost Sensor B Circuit Range/Performance"
"02 41""P0241""Turbo/Super Charger Boost Sensor B Circuit Low"
"02 42""P0242""Turbo/Super Charger Boost Sensor B Circuit High"
"02 43""P0243""Turbo/Super Charger Wastegate Solenoid A"
"02 44""P0244""Turbo/Super Charger Wastegate Solenoid A Range/Performance"
"02 45""P0245""Turbo/Super Charger Wastegate Solenoid A Low"
"02 46""P0246""Turbo/Super Charger Wastegate Solenoid A High"
"02 47""P0247""Turbo/Super Charger Wastegate Solenoid B"
"02 48""P0248""Turbo/Super Charger Wastegate Solenoid B Range/Performance"
"02 49""P0249""Turbo/Super Charger Wastegate Solenoid B Low"
"02 50""P0250""Turbo/Super Charger Wastegate Solenoid B High"
"02 51""P0251""Injection Pump Fuel Metering Control A (Cam/Rotor/Injector)"
"02 52""P0252""Injection Pump Fuel Metering Control A Range/Performance (Cam/Rotor/Injector)"
"02 53""P0253""Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector)"
"02 54""P0254""Injection Pump Fuel Metering Control A High (Cam/Rotor/Injector)"
"02 55""P0255""Injection Pump Fuel Metering Control A Intermittent (Cam/Rotor/Injector)"
"02 56""P0256""Injection Pump Fuel Metering Control B (Cam/Rotor/Injector)"
"02 57""P0257""Injection Pump Fuel Metering Control B Range/Performance (Cam/Rotor/Injector)"
"02 58""P0258""Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector)"
"02 59""P0259""Injection Pump Fuel Metering Control B High (Cam/Rotor/Injector)"
"02 60""P0260""Injection Pump Fuel Metering Control B Intermittent (Cam/Rotor/Injector)"
"02 61""P0261""Cylinder 1 Injector Circuit Low"
"02 62""P0262""Cylinder 1 Injector Circuit High"
"02 63""P0263""Cylinder 1 Contribution/Balance"
"02 64""P0264""Cylinder 2 Injector Circuit Low"
"02 65""P0265""Cylinder 2 Injector Circuit High"
"02 66""P0266""Cylinder 2 Contribution/Balance"
"02 67""P0267""Cylinder 3 Injector Circuit Low"
"02 68""P0268""Cylinder 3 Injector Circuit High"
"02 69""P0269""Cylinder 3 Contribution/Balance"
"02 70""P0270""Cylinder 4 Injector Circuit Low"
"02 71""P0271""Cylinder 4 Injector Circuit High"
"02 72""P0272""Cylinder 4 Contribution/Balance"
"02 73""P0273""Cylinder 5 Injector Circuit Low"
"02 74""P0274""Cylinder 5 Injector Circuit High"
"02 75""P0275""Cylinder 5 Contribution/Balance"
"02 76""P0276""Cylinder 6 Injector Circuit Low"
"02 77""P0277""Cylinder 6 Injector Circuit High"
"02 78""P0278""Cylinder 6 Contribution/Balance"
"02 79""P0279""Cylinder 7 Injector Circuit Low"
"02 80""P0280""Cylinder 7 Injector Circuit High"
"02 81""P0281""Cylinder 7 Contribution/Balance"
"02 82""P0282""Cylinder 8 Injector Circuit Low"
"02 83""P0283""Cylinder 8 Injector Circuit High"
"02 84""P0284""Cylinder 8 Contribution/Balance"
"02 85""P0285""Cylinder 9 Injector Circuit Low"
"02 86""P0286""Cylinder 9 Injector Circuit High"
"02 87""P0287""Cylinder 9 Contribution/Balance"
"02 88""P0288""Cylinder 10 Injector Circuit Low"
"02 89""P0289""Cylinder 10 Injector Circuit High"
"02 90""P0290""Cylinder 10 Contribution/Balance"
"02 91""P0291""Cylinder 11 Injector Circuit Low"
"02 92""P0292""Cylinder 11 Injector Circuit High"
"02 93""P0293""Cylinder 11 Contribution/Balance"
"02 94""P0294""Cylinder 12 Injector Circuit Low"
"02 95""P0295""Cylinder 12 Injector Circuit High"
"02 96""P0296""Cylinder 12 Contribution/Balance"
"02 97""P0297""Vehicle Overspeed Condition"
"02 98""P0298""Engine Oil Over Temperature"
"02 99""P0299""Turbo/Super Charger Underboost"
"03 00""P0300""Random/Multiple Cylinder Misfire Detected"
"03 01""P0301""Cylinder 1 Misfire Detected"
"03 02""P0302""Cylinder 2 Misfire Detected"
"03 03""P0303""Cylinder 3 Misfire Detected"
"03 04""P0304""Cylinder 4 Misfire Detected"
"03 05""P0305""Cylinder 5 Misfire Detected"
"03 06""P0306""Cylinder 6 Misfire Detected"
"03 07""P0307""Cylinder 7 Misfire Detected"
"03 08""P0308""Cylinder 8 Misfire Detected"
"03 09""P0309""Cylinder 9 Misfire Detected"
"03 10""P0310""Cylinder 10 Misfire Detected"
"03 11""P0311""Cylinder 11 Misfire Detected"
"03 12""P0312""Cylinder 12 Misfire Detected"
"03 13""P0313""Misfire Detected with Low Fuel"
"03 14""P0314""Single Cylinder Misfire (Cylinder not Specified)"
"03 15""P0315""Crankshaft Position System Variation Not Learned"
"03 16""P0316""Engine Misfire Detected on Startup (First 1000 Revolutions)"
"03 17""P0317""Rough Road Hardware Not Present"
"03 18""P0318""Rough Road Sensor A Signal Circuit"
"03 19""P0319""Rough Road Sensor B"
"03 20""P0320""Ignition/Distributor Engine Speed Input Circuit"
"03 21""P0321""Ignition/Distributor Engine Speed Input Circuit Range/Performance"
"03 22""P0322""Ignition/Distributor Engine Speed Input Circuit No Signal"
"03 23""P0323""Ignition/Distributor Engine Speed Input Circuit Intermittent"
"03 24""P0324""Knock Control System Error"
"03 25""P0325""Knock Sensor 1 Circuit"
"03 26""P0326""Knock Sensor 1 Circuit Range/Performance"
"03 27""P0327""Knock Sensor 1 Circuit Low"
"03 28""P0328""Knock Sensor 1 Circuit High"
"03 29""P0329""Knock Sensor 1 Circuit Input Intermittent"
"03 30""P0330""Knock Sensor 2 Circuit"
"03 31""P0331""Knock Sensor 2 Circuit Range/Performance"
"03 32""P0332""Knock Sensor 2 Circuit Low"
"03 33""P0333""Knock Sensor 2 Circuit High"
"03 34""P0334""Knock Sensor 2 Circuit Input Intermittent"
"03 35""P0335""Crankshaft Position Sensor A Circuit"
"03 36""P0336""Crankshaft Position Sensor A Circuit Range/Performance"
"03 37""P0337""Crankshaft Position Sensor A Circuit Low"
"03 38""P0338""Crankshaft Position Sensor A Circuit High"
"03 39""P0339""Crankshaft Position Sensor A Circuit Intermittent"
"03 40""P0340""Camshaft Position Sensor A Circuit"
"03 41""P0341""Camshaft Position Sensor A Circuit Range/Performance"
"03 42""P0342""Camshaft Position Sensor A Circuit Low"
"03 43""P0343""Camshaft Position Sensor A Circuit High"
"03 44""P0344""Camshaft Position Sensor A Circuit Intermittent"
"03 45""P0345""Camshaft Position Sensor A Circuit"
"03 46""P0346""Camshaft Position Sensor A Circuit Range/Performance"
"03 47""P0347""Camshaft Position Sensor A Circuit Low"
"03 48""P0348""Camshaft Position Sensor A Circuit High"
"03 49""P0349""Camshaft Position Sensor A Circuit Intermittent"
"03 50""P0350""Ignition Coil Primary/Secondary Circuit"
"03 51""P0351""Ignition Coil A Primary/Secondary Circuit"
"03 52""P0352""Ignition Coil B Primary/Secondary Circuit"
"03 53""P0353""Ignition Coil C Primary/Secondary Circuit"
"03 54""P0354""Ignition Coil D Primary/Secondary Circuit"
"03 55""P0355""Ignition Coil E Primary/Secondary Circuit"
"03 56""P0356""Ignition Coil F Primary/Secondary Circuit"
"03 57""P0357""Ignition Coil G Primary/Secondary Circuit"
"03 58""P0358""Ignition Coil H Primary/Secondary Circuit"
"03 59""P0359""Ignition Coil I Primary/Secondary Circuit"
"03 60""P0360""Ignition Coil J Primary/Secondary Circuit"
"03 61""P0361""Ignition Coil K Primary/Secondary Circuit"
"03 62""P0362""Ignition Coil L Primary/Secondary Circuit"
"03 63""P0363""Misfire Detected - Fueling Disabled"
"03 64""P0364""Reserved"
"03 65""P0365""Camshaft Position Sensor B Circuit"
"03 66""P0366""Camshaft Position Sensor B Circuit Range/Performance"
"03 67""P0367""Camshaft Position Sensor B Circuit Low"
"03 68""P0368""Camshaft Position Sensor B Circuit High"
"03 69""P0369""Camshaft Position Sensor B Circuit Intermittent"
"03 70""P0370""Timing Reference High Resolution Signal A"
"03 71""P0371""Timing Reference High Resolution Signal A Too Many Pulses"
"03 72""P0372""Timing Reference High Resolution Signal A Too Few Pulses"
"03 73""P0373""Timing Reference High Resolution Signal A Intermittent/Erratic Pulses"
"03 74""P0374""Timing Reference High Resolution Signal A No Pulse"
"03 75""P0375""Timing Reference High Resolution Signal B"
"03 76""P0376""Timing Reference High Resolution Signal B Too Many Pulses"
"03 77""P0377""Timing Reference High Resolution Signal B Too Few Pulses"
"03 78""P0378""Timing Reference High Resolution Signal B Intermittent/Erratic Pulses"
"03 79""P0379""Timing Reference High Resolution Signal B No Pulses"
"03 80""P0380""Glow Plug/Heater Circuit A"
"03 81""P0381""Glow Plug/Heater Indicator Circuit"
"03 82""P0382""Glow Plug/Heater Circuit B"
"03 83""P0383""Reserved by document"
"03 84""P0384""Reserved by document"
"03 85""P0385""Crankshaft Position Sensor B Circuit"
"03 86""P0386""Crankshaft Position Sensor B Circuit Range/Performance"
"03 87""P0387""Crankshaft Position Sensor B Circuit Low"
"03 88""P0388""Crankshaft Position Sensor B Circuit High"
"03 89""P0389""Crankshaft Position Sensor B Circuit Intermittent"
"03 90""P0390""Camshaft Position Sensor B Circuit"
"03 91""P0391""Camshaft Position Sensor B Circuit Range/Performance"
"03 92""P0392""Camshaft Position Sensor B Circuit Low"
"03 93""P0393""Camshaft Position Sensor B Circuit High"
"03 94""P0394""Camshaft Position Sensor B Circuit Intermittent"
"04 00""P0400""Exhaust Gas Recirculation Flow"
"04 01""P0401""Exhaust Gas Recirculation Flow Insufficient Detected"
"04 02""P0402""Exhaust Gas Recirculation Flow Excessive Detected"
"04 03""P0403""Exhaust Gas Recirculation Control Circuit"
"04 04""P0404""Exhaust Gas Recirculation Control Circuit Range/Performance"
"04 05""P0405""Exhaust Gas Recirculation Sensor A Circuit Low"
"04 06""P0406""Exhaust Gas Recirculation Sensor A Circuit High"
"04 07""P0407""Exhaust Gas Recirculation Sensor B Circuit Low"
"04 08""P0408""Exhaust Gas Recirculation Sensor B Circuit High"
"04 09""P0409""Exhaust Gas Recirculation Sensor A Circuit"
"04 10""P0410""Secondary Air Injection System"
"04 11""P0411""Secondary Air Injection System Incorrect Flow Detected"
"04 12""P0412""Secondary Air Injection System Switching Valve A Circuit"
"04 13""P0413""Secondary Air Injection System Switching Valve A Circuit Open"
"04 14""P0414""Secondary Air Injection System Switching Valve A Circuit Shorted"
"04 15""P0415""Secondary Air Injection System Switching Valve B Circuit"
"04 16""P0416""Secondary Air Injection System Switching Valve B Circuit Open"
"04 17""P0417""Secondary Air Injection System Switching Valve B Circuit Shorted"
"04 18""P0418""Secondary Air Injection System Control A Circuit"
"04 19""P0419""Secondary Air Injection System Control B Circuit"
"04 20""P0420""Catalyst System Efficiency Below Threshold"
"04 21""P0421""Warm Up Catalyst Efficiency Below Threshold"
"04 22""P0422""Main Catalyst Efficiency Below Threshold"
"04 23""P0423""Heated Catalyst Efficiency Below Threshold"
"04 24""P0424""Heated Catalyst Temperature Below Threshold"
"04 25""P0425""Catalyst Temperature Sensor"
"04 26""P0426""Catalyst Temperature Sensor Range/Performance"
"04 27""P0427""Catalyst Temperature Sensor Low"
"04 28""P0428""Catalyst Temperature Sensor High"
"04 29""P0429""Catalyst Heater Control Circuit"
"04 30""P0430""Catalyst System Efficiency Below Threshold"
"04 31""P0431""Warm Up Catalyst Efficiency Below Threshold"
"04 32""P0432""Main Catalyst Efficiency Below Threshold"
"04 33""P0433""Heated Catalyst Efficiency Below Threshold"
"04 34""P0434""Heated Catalyst Temperature Below Threshold"
"04 35""P0435""Catalyst Temperature Sensor"
"04 36""P0436""Catalyst Temperature Sensor Range/Performance"
"04 37""P0437""Catalyst Temperature Sensor Low"
"04 38""P0438""Catalyst Temperature Sensor High "
"04 39""P0439""Catalyst Heater Control Circuit"
"04 40""P0440""Evaporative Emission System"
"04 41""P0441""Evaporative Emission System Incorrect Purge Flow"
"04 42""P0442""Evaporative Emission System Leak Detected (small leak)"
"04 43""P0443""Evaporative Emission System Purge Control Valve Circuit"
"04 44""P0444""Evaporative Emission System Purge Control Valve Circuit Open"
"04 45""P0445""Evaporative Emission System Purge Control Valve Circuit Shorted"
"04 46""P0446""Evaporative Emission System Vent Control Circuit"
"04 47""P0447""Evaporative Emission System Vent Control Circuit Open"
"04 48""P0448""Evaporative Emission System Vent Control Circuit Shorted"
"04 49""P0449""Evaporative Emission System Vent Valve/Solenoid Circuit"
"04 50""P0450""Evaporative Emission System Pressure Sensor/Switch"
"04 51""P0451""Evaporative Emission System Pressure Sensor/Switch Range/Performance"
"04 52""P0452""Evaporative Emission System Pressure Sensor/Switch Low"
"04 53""P0453""Evaporative Emission System Pressure Sensor/Switch High"
"04 54""P0454""Evaporative Emission System Pressure Sensor/Switch Intermittent"
"04 55""P0455""Evaporative Emission System Leak Detected (large leak)"
"04 56""P0456""Evaporative Emission System Leak Detected (very small leak)"
"04 57""P0457""Evaporative Emission System Leak Detected (fuel cap loose/off)"
"04 58""P0458""Evaporative Emission System Purge Control Valve Circuit Low"
"04 59""P0459""Evaporative Emission System Purge Control Valve Circuit High"
"04 60""P0460""Fuel Level Sensor A Circuit"
"04 61""P0461""Fuel Level Sensor A Circuit Range/Performance"
"04 62""P0462""Fuel Level Sensor A Circuit Low"
"04 63""P0463""Fuel Level Sensor A Circuit High"
"04 64""P0464""Fuel Level Sensor A Circuit Intermittent"
"04 65""P0465""EVAP Purge Flow Sensor Circuit"
"04 66""P0466""EVAP Purge Flow Sensor Circuit Range/Performance"
"04 67""P0467""EVAP Purge Flow Sensor Circuit Low"
"04 68""P0468""EVAP Purge Flow Sensor Circuit High"
"04 69""P0469""EVAP Purge Flow Sensor Circuit Intermittent"
"04 70""P0470""Exhaust Pressure Sensor"
"04 71""P0471""Exhaust Pressure Sensor Range/Performance"
"04 72""P0472""Exhaust Pressure Sensor Low"
"04 73""P0473""Exhaust Pressure Sensor High"
"04 74""P0474""Exhaust Pressure Sensor Intermittent"
"04 75""P0475""Exhaust Pressure Control Valve"
"04 76""P0476""Exhaust Pressure Control Valve Range/Performance"
"04 77""P0477""Exhaust Pressure Control Valve Low"
"04 78""P0478""Exhaust Pressure Control Valve High"
"04 79""P0479""Exhaust Pressure Control Valve Intermittent"
"04 80""P0480""Fan 1 Control Circuit"
"04 81""P0481""Fan 2 Control Circuit"
"04 82""P0482""Fan 3 Control Circuit"
"04 83""P0483""Fan Rationality Check"
"04 84""P0484""Fan Circuit Over Current"
"04 85""P0485""Fan Power/Ground Circuit"
"04 86""P0486""Exhaust Gas Recirculation Sensor B Circuit"
"04 87""P0487""Exhaust Gas Recirculation Throttle Position Control Circuit"
"04 88""P0488""Exhaust Gas Recirculation Throttle Position Control Range/Performance"
"04 89""P0489""Exhaust Gas Recirculation Control Circuit Low"
"04 90""P0490""Exhaust Gas Recirculation Control Circuit High"
"04 91""P0491""Secondary Air Injection System Insufficient Flow"
"04 92""P0492""Secondary Air Injection System Insufficient Flow"
"04 93""P0493""Fan Overspeed"
"04 94""P0494""Fan Speed Low"
"04 95""P0495""Fan Speed High"
"04 96""P0496""Evaporative Emission System High Purge Flow"
"04 97""P0497""Evaporative Emission System Low Purge Flow"
"04 98""P0498""Evaporative Emission System Vent Valve Control Circuit Low"
"04 99""P0499""Evaporative Emission System Vent Valve Control Circuit High"
"05 00""P0500""Vehicle Speed Sensor A"
"05 01""P0501""Vehicle Speed Sensor A Range/Performance"
"05 02""P0502""Vehicle Speed Sensor A Circuit Low Input"
"05 03""P0503""Vehicle Speed Sensor A Intermittent/Erratic/High"
"05 04""P0504""Brake Switch A/B Correlation"
"05 05""P0505""Idle Air Control System"
"05 06""P0506""Idle Air Control System RPM Lower Than Expected"
"05 07""P0507""Idle Air Control System RPM Higher Than Expected"
"05 08""P0508""Idle Air Control System Circuit Low"
"05 09""P0509""Idle Air Control System Circuit High"
"05 10""P0510""Closed Throttle Position Switch"
"05 11""P0511""Idle Air Control Circuit"
"05 12""P0512""Starter Request Circuit"
"05 13""P0513""Incorrect Immobilizer Key"
"05 14""P0514""Battery Temperature Sensor Circuit Range/Performance"
"05 15""P0515""Battery Temperature Sensor Circuit"
"05 16""P0516""Battery Temperature Sensor Circuit Low"
"05 17""P0517""Battery Temperature Sensor Circuit High"
"05 18""P0518""Idle Air Control Circuit Intermittent"
"05 19""P0519""Idle Air Control System Performance"
"05 20""P0520""Engine Oil Pressure Sensor/Switch Circuit"
"05 21""P0521""Engine Oil Pressure Sensor/Switch Range/Performance"
"05 22""P0522""Engine Oil Pressure Sensor/Switch Low Voltage"
"05 23""P0523""Engine Oil Pressure Sensor/Switch High Voltage"
"05 24""P0524""Engine Oil Pressure Too Low"
"05 25""P0525""Cruise Control Servo Control Circuit Range/Performance"
"05 26""P0526""Fan Speed Sensor Circuit"
"05 27""P0527""Fan Speed Sensor Circuit Range/Performance"
"05 28""P0528""Fan Speed Sensor Circuit No Signal"
"05 29""P0529""Fan Speed Sensor Circuit Intermittent"
"05 30""P0530""A/C Refrigerant Pressure Sensor A Circuit"
"05 31""P0531""A/C Refrigerant Pressure Sensor A Circuit Range/Performance"
"05 32""P0532""A/C Refrigerant Pressure Sensor A Circuit Low"
"05 33""P0533""A/C Refrigerant Pressure Sensor A Circuit High"
"05 34""P0534""Air Conditioner Refrigerant Charge Loss"
"05 35""P0535""A/C Evaporator Temperature Sensor Circuit"
"05 36""P0536""A/C Evaporator Temperature Sensor Circuit Range/Performance"
"05 37""P0537""A/C Evaporator Temperature Sensor Circuit Low"
"05 38""P0538""A/C Evaporator Temperature Sensor Circuit High"
"05 39""P0539""A/C Evaporator Temperature Sensor Circuit Intermittent"
"05 40""P0540""Intake Air Heater A Circuit"
"05 41""P0541""Intake Air Heater A Circuit Low"
"05 42""P0542""Intake Air Heater A Circuit High"
"05 43""P0543""Intake Air Heater A Circuit Open"
"05 44""P0544""Exhaust Gas Temperature Sensor Circuit"
"05 45""P0545""Exhaust Gas Temperature Sensor Circuit Low"
"05 46""P0546""Exhaust Gas Temperature Sensor Circuit High"
"05 47""P0547""Exhaust Gas Temperature Sensor Circuit"
"05 48""P0548""Exhaust Gas Temperature Sensor Circuit Low"
"05 49""P0549""Exhaust Gas Temperature Sensor Circuit High"
"05 50""P0550""Power Steering Pressure Sensor/Switch Circuit"
"05 51""P0551""Power Steering Pressure Sensor/Switch Circuit Range/Performance"
"05 52""P0552""Power Steering Pressure Sensor/Switch Circuit Low Input"
"05 53""P0553""Power Steering Pressure Sensor/Switch Circuit High Input"
"05 54""P0554""Power Steering Pressure Sensor/Switch Circuit Intermittent"
"05 55""P0555""Brake Booster Pressure Sensor Circuit"
"05 56""P0556""Brake Booster Pressure Sensor Circuit Range/Performance"
"05 57""P0557""Brake Booster Pressure Sensor Circuit Low Input"
"05 58""P0558""Brake Booster Pressure Sensor Circuit High Input"
"05 59""P0559""Brake Booster Pressure Sensor Circuit Intermittent"
"05 60""P0560""System Voltage"
"05 61""P0561""System Voltage Unstable"
"05 62""P0562""System Voltage Low"
"05 63""P0563""System Voltage High"
"05 64""P0564""Cruise Control Multi-Function Input A Circuit"
"05 65""P0565""Cruise Control On Signal"
"05 66""P0566""Cruise Control Off Signal"
"05 67""P0567""Cruise Control Resume Signal"
"05 68""P0568""Cruise Control Set Signal"
"05 69""P0569""Cruise Control Coast Signal"
"05 70""P0570""Cruise Control Accelerate Signal"
"05 71""P0571""Brake Switch A Circuit"
"05 72""P0572""Brake Switch A Circuit Low"
"05 73""P0573""Brake Switch A Circuit High"
"05 74""P0574""Cruise Control System - Vehicle Speed Too High"
"05 75""P0575""Cruise Control Input Circuit"
"05 76""P0576""Cruise Control Input Circuit Low"
"05 77""P0577""Cruise Control Input Circuit High"
"05 78""P0578""Cruise Control Multi-Function Input A Circuit Stuck"
"05 79""P0579""Cruise Control Multi-Function Input A Circuit Range/Performance"
"05 80""P0580""Cruise Control Multi-Function Input A Circuit Low"
"05 81""P0581""Cruise Control Multi-Function Input A Circuit High"
"05 82""P0582""Cruise Control Vacuum Control Circuit/Open"
"05 83""P0583""Cruise Control Vacuum Control Circuit Low"
"05 84""P0584""Cruise Control Vacuum Control Circuit High"
"05 85""P0585""Cruise Control Multi-Function Input A/B Correlation"
"05 86""P0586""Cruise Control Vent Control Circuit/Open"
"05 87""P0587""Cruise Control Vent Control Circuit Low"
"05 88""P0588""Cruise Control Vent Control Circuit High"
"05 89""P0589""Cruise Control Multi-Function Input B Circuit"
"05 90""P0590""Cruise Control Multi-Function Input B Circuit Stuck"
"05 91""P0591""Cruise Control Multi-Function Input B Circuit Range/Performance"
"05 92""P0592""Cruise Control Multi-Function Input B Circuit Low"
"05 93""P0593""Cruise Control Multi-Function Input B Circuit High"
"05 94""P0594""Cruise Control Servo Control Circuit/Open"
"05 95""P0595""Cruise Control Servo Control Circuit Low"
"05 96""P0596""Cruise Control Servo Control Circuit High"
"05 97""P0597""Thermostat Heater Control Circuit/Open"
"05 98""P0598""Thermostat Heater Control Circuit Low"
"05 99""P0599""Thermostat Heater Control Circuit High"
"06 01""P0601""ROM Check failure "
"06 50""P0650""MIL drive"
"06 55""P0655""Engine bay overheat warning lamp drive"
"07 05""P0705""PRNDL range sensor circuit problem"
"07 22""P0722""transmissions output speed sensor"
"07 30""P0730""Transmission incorrect ratio"
"07 90""P0790""Gearbox NORMAL operation switch"
"08 15""P0815""Gear change UP switch (steering wheel)"
"08 16""P0816""Gear change DOWN switch (steering wheel)"
"11 85""P1185""Upstream oxygen sensor heater - Electrical"
"11 86""P1186""Upstream oxygen sensor heater - Electrical"
"11 91""P1191""Downstream oxygen sensor heater - Electrical"
"11 92""P1192""Downstream oxygen sensor heater - Electrical"
"12 31""P1231""Fuel pump relay"
"12 32""P1232""Fuel pump relay"
"13 00""P1300""misfire causing catalyst damage"
"13 16""P1316""misfire causing emissions problems"
"15 06""P1506""Idle speed control stepper motor drive"
"15 07""P1507""Idle speed control stepper motor drive"
"15 08""P1508""Idle speed control stepper motor drive"
"15 37""P1537""Airconditioning drive"
"15 38""P1538""Airconditioning drive"
"15 90""P1590""rough road sensor fault"
"16 10""P1610""Main relay"
"16 11""P1611""Main relay"
"16 40""P1640""CAN message failure"
"17 75""P1775""Gearbox problem"
"17 85""P1785""GIB over temperature"
"17 87""P1787""stepper motor dirve"
"17 88""P1788""stepper motor dirve"
"18 15""P1815""Gear change UP switch (gear lever)"
"18 16""P1816""Gear change DOWN switch (gear lever)"
"18 30""P1830""PWM link between EMS and GIB"
"18 31""P1831""PWM link between EMS and GIB"
"18 36""P1836""Data from GIB to EMS"
"18 37""P1837""comms link between EMS and inst pack"
"18 38""P1838""comms link between EMS and inst pack"

I can also add-

P1522 Camshaft circuits inc. cam sensor.
P1524 'A' camshaft circuit, solenoid.
P1530 'B' camshaft circuit, solenoid.
 
#62 · (Edited)
IN theroy any OBD II reader will give you the same information BUT the more expensive ones will give you Rover specific info and will alloow yo to do other stuff such as programe key plips etc.

Any sensor which is used to feedback to the ECU, which clearly isnt working SHOULD (but doesnt always) show up using a scanner.

Obviosuly things like the fuel pressure regulator are not elctronic and dont tlel the ECU anyhitng so wont show up. O2 sensors, howevr can be faulty but not show on a reader, as they cna be still working but cna become "lazy". not all readers will pick up the laziness as they may not always read proper"live" data (i.e refresh rate may be too slow). You also need to know what to look for. something I hope we can teach each other in time

Some examples form a laptop based system
 

Attachments

#69 ·
Was doing some searching on fleabay and found these.....

http://cgi.ebay.co.uk/CAR-DIAGNOSTI...ryZ30921QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.co.uk/Creader-OBD-O...ryZ30921QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Anyone know whether they're worth it? Only a few quid, but if they work??

I bought the second one as it was so cheap. I caused a fault on my 2004 MG ZR (unplugged the MAF sensor) plugged the fault code reset unit in, but it would not read or reset the engine check lamp, so bit of a waste of time..
Plugged it into the TF & it did the same as on the ZR ie nothing uesfull.

Andy
 
#71 ·
Right here's a question for the gurus.

Picture 1

1st graph - Short term fuel trim (should be around 0 although mine tends to err on the side of lean, whcih may explain my overfuelling). Anyway, as you cans ee here, on idling, it fluctuates between 2 and -2, so is probably quite normal

2nd graph - 1st O2 sensor, showing normal (perhaps) cycling between 0.08 and 0.8

3rd Graph - Ignition advance (dont know why I had this on ) fluctuating around 8-12%

4th Graph - 2nd O2 sensor showing a constant (ish) voltage


PICTURE 2:

There was a blip after idling for about 20 mins.

1st GRaph - at 68 ticks, you can see the shotr term trim change form roughly around 0, to becoming rich suddenyl (above 0)

2nd graph - 1st O2 sensor, again at 68 ticks, signal suddenly drops for no reason

3rd Graph - ignition advance, not too much to note, but goes higher to compensate for change in running

4th graph. For some reason I saved this coolant temp sesnor instead of the second 02 sensor. At this poin the posat cat sensor had decided to cycle, whcih I knwo it should not do.


Anyone got an explanation. It went back to normal a few mins later after I had revved it up a bit. I wonder if this is one of my problems. I wonder if the post cat sensor change is becuase theres no cat, and is unrelated?

Answers on a postcard please (and not sent by royal mail)
 

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#72 ·
No expert at all on this - but on the second set of graphs, your coolant temp seems all over the shop. I know this can affect fuelling - so is the sensor duff / thermostat failed? I would have thought after 20 mins - your coolant should all be more or less the same temp
 
#76 ·
I haven't logged too many graphs at the moment, but I have looked at the idle revs and advance at idle, mainly due to a rough idle that I have. I was fairly alarmed to see howm much the advance was altering constantly. Is this normal or is it trying to compensate for something?

Text Font Line Technology Display device


Text Font Line Clock Technology


The timing swing is between 1 degree and 15.5 with the revs varying by about 100. This is all on tickover.
 
#77 ·
I haven't logged too many graphs at the moment, but I have looked at the idle revs and advance at idle, mainly due to a rough idle that I have. I was fairly alarmed to see howm much the advance was altering constantly. Is this normal or is it trying to compensate for something?

View attachment 34941

View attachment 34942

The timing swing is between 1 degree and 15.5 with the revs varying by about 100. This is all on tickover.
Only speaking form my own car, at diel my revs are pretty much constat, usually around 850. Certainly doesnt change as often as yours, but then my car isnt "normal":lol:


My ignition advance is around 8-12, and as my graph above is quite variable. I presume all the bits and bobs alter a lot to keep the revs stationary?


Maybe you have a dodgy IACV?
 
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