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P0422 Diagnostic Trouble Code Discussion for February 2008

Catalyst Efficiency Below Normal (Bank 1)


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Trouble Ticket Help Requests for DTC P0422
Help Request Posted
1999 Audi A6 2.8L MIL Lamp on VIN: 4D0907551A
P0422: main cat bank 1 efficencey below threshold. WE REPLACED THE ENTIRE EXHAUST W/ AFTERMARKET AND IN SHORT ORDER {200 300 MILES } THE CUSTOMER WENT TO THE DEALER WHO LOST THE EXHAUST JOB FOR SERVICE AND A MIL ON . THEY FAXED ME THE RO. AND SAID BOTH CATS WERE DEFECTIVE AT THE SAME TIME . I ASKED FOR A REFLA...
February 06, 2008
1999 Audi A6 2.8L MIL Lamp on VIN: 4D0907551A
P0422: main cat bank 1 efficencey below threshold. WE REPLACED THE ENTIRE EXHAUST W/ AFTERMARKET AND IN SHORT ORDER {200 300 MILES } THE CUSTOMER WENT TO THE DEALER WHO LOST THE EXHAUST JOB FOR SERVICE AND A MIL ON . THEY FAXED ME THE RO. AND SAID BOTH CATS WERE DEFECTIVE AT THE SAME TIME . I ASKED FOR A REFLA...
February 06, 2008