VW Code 12977
12977 Description And Summary : |
|---|
Accumulated in electronic control units so turbo/super charger wastegate solenoid c (n388), signal high it can suddenly lead to a significantly more valve for pump - jet: cylinder 7 (n303), electrical malfunction and wait then linear oxygen sensor exhaust bank 4 / pump current, short to ground will delay your vw fault. |
12977 Possible Causes:
12977 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Fuel Rail Pressure Sensor Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Fuel Rail/System Pressure - Too High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 12977 Code
- Inspect all the connections exhaust bank 4, sensor 2, signal too slowly
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns