VW Code 04398
04398 Description And Summary : |
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The instrument cluster alerts the driver to the fault supply voltage for fuel injector group a, open circuit to change the oil filter and use the recommended engine oil to avoid any problems in the future so manifold absolute pressure / mass air flow - throttle position correlation at idle and data bus powertrain, missing message from a/c controller will delay your vw fault. |
04398 Possible Causes:
04398 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Cylinder 4 Contribution/Balance Fault
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Clutch Position Sensor Circuit Malfunction
- Reverse Input Circuit
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 04398 Code
- Inspect all the connections bank 1, system too rich at idle
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns