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P0422 Diagnostic Trouble Code Discussion for December 2004

Catalyst Efficiency Below Normal (Bank 1)


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Trouble Ticket Help Requests for DTC P0422
Help Request Posted
2000 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWMA23BOY
P0422: . this car had code p0422 was check by different shop.customer requested to me replaced o2 sensor after cat. this was done a month ago clear code. there was no light till three weeks. after three weeks ckeck engine light on again. check and found same code. car ...
December 20, 2004
2000 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWMA23BOY
P0422: . this car had code p0422 was check by different shop.customer requested to me replaced o2 sensor after cat. this was done a month ago clear code. there was no light till three weeks. after three weeks ckeck engine light on again. check and found same code. car ...
December 20, 2004