P4121 Diagnostic Trouble Code Discussion for February 2012
second air pump bank 1
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| Help Request | Posted | |
| 1997 BMW 528i 2.8L MIL Lamp on VIN: WBADD6321V P4121: second air pump bank 1. Secondary air pump codes. Pump getting no power and we cannot find relay. Some data is wrong, we looked everywhere. Does anyone know where it is? |
February 08, 2012 |
