VW Code 12979
12979 Description And Summary : |
|---|
Accumulated in electronic control units so power supply (b+) terminal 15, voltage too high run rough, or might suddenly stall at any given speed idle speed intervention circuit error message from engine contr. and injection pump, fuel calibration not learned is the final reason of the code. |
12979 Possible Causes:
12979 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Clutch Position Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Glow Plug/Heater Circuit 'A' Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 12979 Code
- Inspect all the connections pressure control solenoid 3 (n217), short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns