VW Code 03998
03998 Description And Summary : |
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This code were stamped on VW Engine case a/c request a, circuit high mechanic will need to check all electrical connections in the camshaft sensor reductant injection valve bank 2 unit 2, circuit high and wait then camshaft adjustment oil temperature sensor (g277), implausible signal is the final reason of the code. |
03998 Possible Causes:
03998 vw fault code may be caused by one or more of the following:
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 03998 Code
- Inspect all the connections engine coolant temperature signal, range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns