P1421 Diagnostic Trouble Code Discussion for March 2009
Cold Start Emission Reduction Strategy Monitoring
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| Help Request | Posted | |
| 1999 Audi A6 2.8L MIL Lamp on VIN: WAUB124B6X P1421: sec air pump circuit short to gnd. Audi techs i hope you have some insight. This car came in for a ck engine light, found 14 codes in all most of which refer to a short to ground. Customer has been driving for a month with no drivability problems. found fuse # 29 ecm 30 amp blown, Replace fuse ... |
March 30, 2009 | |
| 1999 Audi A6 2.8L MIL Lamp on VIN: WAUB124B6X P1421: sec air pump circuit short to gnd. Audi techs i hope you have some insight. This car came in for a ck engine light, found 14 codes in all most of which refer to a short to ground. Customer has been driving for a month with no drivability problems. found fuse # 29 ecm 30 amp blown, Replace fuse ... |
March 31, 2009 |
