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2003 Audi A6 Oxygen sensor codes

I have an 2003 Audi A6 quattro 2.7 (Engine type BEL) I ran VAG-COM on it and came up with these two codes: P0131 and P0154.

Two questions:

1. Where on the car are the sensors that these codes relate to?
2. Should I consider the catalytic converter as the cause of the problem (I am blowing a fair amount of grey smoke from time to time)?

Code details:

16515 - Oxygen (Lambda) Sensor B1 S1: Signal too Low
P0131 - 35-10 - - - Intermittent
16538 - Oxygen (Lambda) Sensor B2 S1: No Activity
P0154 - 35-10 - - - Intermittent

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Defenetly should consider replacing the catalytic converter,
since this is the part that filters the s smoke coming out of your car,
and since you are getting grey smoke a new one should defenetly fix this problem .

Posted on Dec 14, 2008

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Change the catalytic converter it will solve your problems

Posted on Dec 14, 2008

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