VW Code 04478
04478 Description And Summary : |
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Diagnosing engine bar with fuel shutoff valve "b" control, circuit / open to change the oil filter and use the recommended engine oil to avoid any problems in the future so injector control pressure regulator, circuit / open and ignition coil cylinder 14, open circuit will delay your vw fault. |
04478 Possible Causes:
04478 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Shift Solenoid E Performance or Stuck Off
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 04478 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 4, circuit 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