1998 Audi A6 98Adui A6 Won't Start

chico23 · Posted at Tue Sep 09, 2008 5:54 pm

1998 Audi A6 6 cyl All Wheel Drive Automatic 91500 miles
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MY ADUI HAS THE FOLLOWING CODES P0303 AND P0305 WHICH MEANS THE 3RD AND 5TH CYLINDER ARE MISFIRING WHAT COULD I DID TO CLEAR THIS CODE. ALSO IT HAS THIS ONE P0140 WHICH IS OXYGEN SENSOR NO ACTIVITY MEAN IS IT THE ONE AFTER THE CONVERTER AND DO I HAVE TO CHANGE IT I WILL BE THANKFUL FOR YOUR HELP

KHLow2008 · Posted at Wed Sep 17, 2008 4:25 am

Hi chico23,

P0140 is Bank 1 sensor = BEFORE the catalytic converter.

If it is not woking, it can cause the other codes. Replacing it should solve the other problems.

You need special scan tools to erase the codes.