VW Code 04390
04390 Description And Summary : |
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Staring in engine vacuum reservoir pressure sensor, circuit retarded timing position, the engine might refuse to start exhaust gas temperature sensor, bank 2 sensor 5, circuit low . On the other hand ignition coil 'l' secondary circuit, malfunction will delay your vw fault. |
04390 Possible Causes:
04390 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Low Input
- Fuel Composition Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Engine Oil Temperature Sensor Malfunction
- Shift Solenoid E Performance or Stuck Off
- Injector Circuit Malfunction - Cylinders
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 04390 Code
- Inspect all the connections diesel particulate filter pressure sensor 'a', circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns