[Biturbos4] VagCom errors

Ti Kan ti at amb.org
Sun Aug 29 22:40:47 EDT 2004

Adam Jansen writes:
> OK, so I tried out this handy cool new tool for the first time and I need 
> help figuring out what the codes mean...
> What are the best "OK now you know what's wrong here's how to fix it 
> websites?"

Best place is the VAG-COM support list:

In your case, though, the faults are fairly self-descriptive.

> I had two codes
> One is my O2 sensor
> 17526 - Oxygen (Lambda) Sensor Heating: B1 S2: Open Circuit
>             P1118 - 35-00 - -
> 17522 - Oxygen (Lambda) Sensor: B1 S2: Internal Resistance too High
>             P1114 - 35-00 - -
> Is it bad? do I need to replace it? which one?

It's possible that the connector to one of your oxygen sensors
has become disconnected.  Because it is just a bit coincidental
that the heater filament of the sensor and the sensor element itself
would both fail at the same time.

B1 S2 stands for "bank 1, sensor 2".  I think bank 1 is the left
(US driver's) side of the engine, sensor 2 is the post-cat sensor.
Don't quote me on that though.  Someone please correct me if I am

> and my AC isn't working
> 00792 - A/C Pressure Switch (F129)
>             31-00 - Open or Short to Ground
> New switch needed?

Maybe, or possibly an electrical contact problem too.  If you have the
Bentley repair manual then you could look up where the F129 switch is.

 R 1 3 5  Ti Kan
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