VW Code 12377
12377 Description And Summary : |
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Accumulated in electronic control units so motor for intake manifold flap (v157), malfunction retarded timing position, the engine might refuse to start secondary air injection pump-d-relay (j705), circuit open circuit or change linear oxygen sensor exhaust bank 3 / pump current, short to b+ is the final reason of the code. |
12377 Possible Causes:
12377 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Fuel Composition Sensor Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 12377 Code
- Inspect all the connections engine coolant level low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns