I am getting a check engine light in my car took it to my buddys that has a vagcom

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01-24-2010, 02:55 PM

M22

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I am getting a check engine light in my car took it to my buddys that has a vagcom

questions about the codes I got.

16815 - Warm Up Catalyst; Bank 2: Efficiency Below Threshold
P0431 - 35-00 - -
17863 - Exhaust Gas Temp Sensor 1 (G235): Implausible Signal
P1455 - 35-10 - - - Intermittent
17867 - Exhaust Gas Temp Sensor 2 (G236): Implausible Signal
P1459 - 35-10 - - - Intermittent
17539 - Oxygen (Lambda) Sensor; B2 S1: Internal Resistance too High
P1131 - 35-10 - - - Intermittent
17521 - Oxygen (Lambda) Sensor; B1 S1: Internal Resistance too High
P1113 - 35-10 - - - Intermittent

He was explaining how there are 2 o2 sensors and then the catalytic converter then 2 more o2 sensors. Could I only need to replace the front 2 and do you think then it would clear the back to, or is it just best to replace all 4 at once.

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01-24-2010, 04:13 PM

rktskicar

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Before you do that, have your friend with a VAG clear all your codes and recheck them in a few days. That code listing says to replace both EGTs and both primary O2s. That will be many dollars. Be sure that this error message is correct by clearing the codes and checking again. Report back on this thread.

Bruce