VW Code 03378
03378 Description And Summary : |
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Staring in engine fuel mixture control adjustment range 2, higher limit not reached run rough, or might suddenly stall at any given speed o2 sensor reference voltage bank 1 sensor 1, circuit / open you can see the is the final reason of the code. |
03378 Possible Causes:
03378 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor B Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 03378 Code
- Inspect all the connections mass-airflow sensor 3 (g456), signal to high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns