VW Code 04578
04578 Description And Summary : |
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Staring in engine supply voltage for fuel injector group b, short to ground It could be due to limited air getting through your air intake fuel rail sensor (g401), short to b+ or change torque management request input signal a, high will delay your vw fault. |
04578 Possible Causes:
04578 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift Solenoid E Performance or Stuck Off
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Injector Circuit Malfunction - Cylinders
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 04578 Code
- Inspect all the connections reductant injection valve bank 2 unit 2, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns