P0431 Diagnostic Trouble Code Discussion for June 2009
Warmup Catalyst System Efficiency Low (Bank 2)
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| Help Request | Posted | |
| 2002 Audi A4 3.0L Misfire, MIL Lamp on VIN: WAULT68E42 P0431: cat bank 2. this well maintained car was presented to us with a mil light and idle misfire issue...not a flat out miss but definatley not running as crisp as this car does.short and long term fuel trims are basically at zero give or take a percentage point-1.5 to.75but i ... |
June 12, 2009 |
