I just bought a 2000 VW golf it has 7 codes registering on my reader. There are codes from p140,p141 all the way to p134,and p1128. All codes seem to be pointing at communications with my O2 sensors reading. I've noticed under the hood that there is a hose about 10mm in diameter that is plugged with a screw, that's supposed to attach to a hose fitting on the firewall that is also plugged with a screw. From what I understand the O2 calculation is in reference to coolant temperature, could this hose be the problem that is causing all these codes to be registering? Or should I be directing my attention towards my ECM?

 

Welcometo the forum.

Well there is a number missing of those error numbers. There aren't 7 codes shown only 4.


VAG Error Code: 17808
EOBD II Error Code: P1400




EOBD II Error Code: P1401

Fault Location:
Exhaust gas recirculation (EGR) valve/solenoid, bank 1 - short to earth

Possible Cause:
Malfunction indicator lamp (MIL) Triggered on first occurrence.
Wiring short to earth.
Exhaust gas recirculation (EGR) valve.

VAG Error Code: 17810
EOBD II Error Code: P1402

Fault Location:

Exhaust gas recirculation (EGR) valve/solenoid, bank 1 - short to positive

Possible Cause:
Malfunction indicator lamp (MIL) Triggered on first occurrence.
Wiring short to positive.
Exhaust gas recirculation (EGR) valve/solenoid.

VAG Error Code: 17811
EOBD II Error Code: P1403

Fault Location:
Exhaust gas recirculation (EGR) system - control difference

Possible Cause:
Basic setting not carried out.
Exhaust gas recirculation (EGR) system.

VAG Error Code: 17812

EOBD II Error Code: P1404

Fault Location:
Exhaust gas recirculation (EGR) system - basic setting

Possible Cause:
Basic setting not carried out.
Exhaust gas recirculation (EGR) system.

VAG Error Code: 17815
EOBD II Error Code: P1407

Fault Location:
Exhaust gas recirculation temperature (EGRT) sensor - low input

Possible Cause:

Malfunction indicator lamp (MIL) Triggered on first occurrence.

Wiring short to earth.

Exhaust gas recirculation temperature (EGRT) sensor.

VAG Error Code: 17816
EOBD II Error Code: P1408

Fault Location:

Exhaust gas recirculation temperature (EGRT) sensor - high input

Possible Cause:

Malfunction indicator lamp (MIL) Triggered on second occurrence.

Wiring short to positive.

Earth wire defective.

Exhaust gas recirculation temperature (EGRT) sensor.

VAG Error Code: 17817
EOBD II Error Code: P1409

Fault Location:

Evaporative emission (EVAP) canister purge valve - circuit malfunction

Possible Cause:

Malfunction indicator lamp (MIL) Triggered on second occurrence.

Wiring.

Evaporative emission (EVAP) canister purge valve.

As taken from my Free EODB II Error Codes Software

This is a horrible site for showing text I've edited this 5 times and it still doesn't show correctly.