2002 CHEVY IMPALA ABS, TRACTION CONTROL & CHECK ENGINE LIGHT
Re: 2002 CHEVY IMPALA ABS, TRACTION CONTROL & CHECK ENGINE L
Sorry, haven't had time to work on car lately, so haven't checked oxygen sensors as of yet. But a little more info on the P0420 code, before we do. Code reader states P0420 catalyst system efficiency below threshold bank 1. Does this still mean the catalytic converter or oxygen sensors? Wasn't getting the bank 1 on previous readings.
Re: 2002 CHEVY IMPALA ABS, TRACTION CONTROL & CHECK ENGINE L
the bank one just tells you which side converter is working poorly. Some cars will say bank one but only have one cat. Bank one cat. is to tell which side when you have a converter for each side of the engine. bank one or bank two
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