Fault code check procedure

[Fast Guy]

Correct.

Check the wiring to the det sensor as it can break or disconnect. The ecu should retard the ignition and cut boost when it detects det. So your car should be feeling sluggish.

 

[Momighty]

when connecting the wire or paper clip to the terminals do you leave it connected while the code are being displayed or do you remove it until the codes have finished?

Thanks

 

[steve963]

when connecting the wire or paper clip to the terminals do you leave it connected while the code are being displayed or do you remove it until the codes have finished?

Thanks

connect paper clip for about 3 seconds then remove, the codes will now show

 

[Momighty]

thanks, and then once you have done this and you want to clear them or start the car wot do you do because i read if you dont clear it or somthing the the car wont run right?

is it as simple as plug the paper clip back in until it stops flashing and its done?

 

[scottw8943]

car will not rev past 2500rpm done fault code check and its the afm curcit will it be the airflow meter thats gone.

 

[Fast Guy]

The picture from the manual in the first post says..........Check harness and connector, if both OK replace AFM. So check them both and then replace if necessary.

 

[kirko]

tried a fault code check on mine, when i short the two pins nothing happens
i have a power fc will this affect it ?

 

[AJ4]

yes, because you can't read fault codes with a PFC But then again, why would you want to when you can read and log every single sensor and switch on the car

 

[kirko]

is that using datalogit software?

 

[BabyGodzillaGTi-R]

Surprisingly the other day the car felt like rubbish on start up.
By luck i noticed my SAFC monitor showing 100% full throttle.
Obviously my foot is off the throttle.
Did the diagnostic check it mentions AFM instead. Odd...

Swap the TPS and everything was fine again.
Odd....

 

[kev_200uk]

i just go 12, where do i need to look, still gettin used to all this plz help!

 

[gunmetalgtir]

i just go 12, where do i need to look, still gettin used to all this plz help!

What do you mean?

 

[kev_200uk]

exactly what it says, i did a code check, it did one long flash and 2 short flashes

 

[Braveheart]

exactly what it says, i did a code check, it did one long flash and 2 short flashes

12 = AFM circuit.

From page one, post 1:

Here's some of the other codes:

11 Crank Angle Sensor circuit
12 AFM circuit
13 Engine temp sensor circuit
21 Ignition signal circuit
34 Detonation sensor circuit
43 Throttle sensor circuit
55 No malfunction in the above circuits"

 

[kev_200uk]

12 = AFM circuit.

From page one, post 1:

Here's some of the other codes:

11 Crank Angle Sensor circuit
12 AFM circuit
13 Engine temp sensor circuit
21 Ignition signal circuit
34 Detonation sensor circuit
43 Throttle sensor circuit
55 No malfunction in the above circuits"

so what could cause the problem there then??

 

[boozyboo]

just found some more codes, hope this helps someone.


List of Codes
Pre-OBDII
11 Crank Angle Sensor

12 Mass Air Flow Sensor

13 ECT Sensor

14 Vehicle Speed Sensor

16 TCS Signal

21 Ignition Signal Circuit

25 Idle Air Control Valve

22 Fuel Pump Control

31 ECM

32 EGR Function

33 Heated Oxygen Sensor

34 Knock Sensor

35 EGR Temperature Sensor (RH)

41 Intake Air Temperature Sensor

42 Fuel Pump Sensor

43 Throttle Position Sensor

45 Injector Leak

46 Secondary Throttle Sensor

51 Injector Analysis

53 Exhaust Gas Sensor (LH)

54 Signal Circuit From A/T Control Unit To ECM 55 System OK (1990-1995 Q45 only)

65-71 Single Cylinder Or Multiple Cylinder Misfire

72 Three Way catalyst Function

76 Fuel Injection System Function

77 Rear Heated Oxygen Sensor

82 Crankshaft Position Sensor

84 A/T Diagnosis Communication Line

91 Front Heated Oxygen Sensor Heater

103 Park/Neutral Position Switch

105 EGR & Canister Control Solenoid

 

[astarozna]

I did work on mine as well(top right and next to it)!
long:long:long:long:long - short:short:short:short:short

 

[mad Al]

:? hi my r got engine light on at tick over when i rev it goes out but when drivin it starts missing and wont go over 3.5 its got apexi power fc so wot do i need to get the codes to see wot sensor has gone can anybody help cheers i tried shorting connector but nothing happens so where can i get the equipment to read it cheers anybody

 

[snoon]

most garages will have a fault code checker but it will cost you about 25 quid.

If your check engine light works then the fault code check should work. Double check the instructions to make sure your doing it right.

 

[Fast Guy]

Boozyboo. ALL our (7) codes are as listed in the first post. There are no more codes for our car.