Question about 2002 Audi A4
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.
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)?
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
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
Change the catalytic converter it will solve your problems
Posted on Dec 14, 2008
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Posted on Jan 02, 2017
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Mar 20, 2016 | Audi Cars & Trucks
Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
What does that mean? Essentially the same as P0136 and P0137, a P0131 code refers to the first oxygen sensor on Bank 1.
P0131 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes. This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 1 Sensor 1 is located in front of the catalytic converter.
Symptoms There may be no visible symptoms to the driver, other than the MIL (Check Engine / Service Engine Soon) illumination.
Causes A code P0131 may mean that one or more of the following has happened:
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