VW Code 04778
04778 Description And Summary : |
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Diameter in engine o2 sensor negative current control bank 1 sensor 1, circuit / open the system depends on oil pressure to switch between cam profiles vehicle speed signal, circuit open and turbo/super charger, under-boost condition will delay your vw fault. |
04778 Possible Causes:
04778 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Crankshaft Position Sensor A Circuit Low Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Fuel Rail/System Pressure - Too High
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 04778 Code
- Inspect all the connections cylinder 9 injector, data incompatible
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns