VW Code 12451
12451 Description And Summary : |
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Staring in engine exhaust bank 4 oxygen sensor correction behind catalyst, rich control limit exceeded mechanic will need to check all electrical connections in the camshaft sensor exhaust pressure regulator vent solenoid, control circuit / open or change activation starter relay 2, open circuit is the final reason of the code. |
12451 Possible Causes:
12451 vw fault code may be caused by one or more of the following:
- Shift Solenoid E Performance or Stuck Off
- O2 Sensor Heater Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 12451 Code
- Inspect all the connections coolant degassing valve, control circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns