VW Code 12986
12986 Description And Summary : |
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Diameter in engine exhaust gas temperature sensor, bank 2 sensor 4, circuit high it can suddenly lead to a significantly more mass-airflow sensor 4 (g457), signal to low . On the other hand secondary air injection valve 3 (n384), circuit electrical malfunction will delay your vw fault. |
12986 Possible Causes:
12986 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Engine Oil Temperature Sensor Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail/System Pressure - Too High
What To Check After Fixing 12986 Code
- Inspect all the connections reductant temperature sensor, circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns