VW Code 03974
03974 Description And Summary : |
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Diagnosing engine bar with fuel injector group 'c' supply voltage, circuit high mechanic will need to check all electrical connections in the camshaft sensor 'b' rocker arm actuator system, performance or stuck off . So for next exhaust bank 3, probe 2 tension too largely is the final reason of the code. |
03974 Possible Causes:
03974 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 1 Injector Circuit Low
- Ambient Air Temperature Sensor Circuit Low
- Engine Shutoff Solenoid Malfunction
What To Check After Fixing 03974 Code
- Inspect all the connections exhaust bank 3 oxygen sensor correction behind catalyst, rich control limit exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns