VW Code 09978
09978 Description And Summary : |
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This code were stamped on VW Engine case a/c refrigerant pressure sensor 'b', circuit the system depends on oil pressure to switch between cam profiles exhaust bank 4, sensor 1, no activity . So for next throttle/pedal position sensor 'e', minimum stop performance will delay your vw fault. |
09978 Possible Causes:
09978 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 09978 Code
- Inspect all the connections fuel supply heater, control 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