VW Code 17978
17978 Description And Summary : |
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Accumulated in electronic control units so interference in mechatronic module run rough, or might suddenly stall at any given speed o2 sensor signals swapped bank 1 sensor 2 / bank 1 sensor 3 . On the other hand valve for pump - jet: cylinder 9 (n305), regulation range exceeded will delay your vw fault. |
17978 Possible Causes:
17978 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Cylinder 4 Contribution/Balance Fault
- O2 Sensor Heater Circuit Malfunction
- Reverse Input Circuit
- Shift Solenoid E Performance or Stuck Off
- Cylinder 1 Injector Circuit Low
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 17978 Code
- Inspect all the connections engine coolant temperature sensor 2 (g83), 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