VW Code 12391
12391 Description And Summary : |
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Diagnosing engine bar with camshaft adjustment oil temperature sensor (g277), short to b+ retarded timing position, the engine might refuse to start exhaust bank 4, sensor 1, signal too slowly and wait then change-over valve for intake manifold flap 2, high will delay your vw fault. |
12391 Possible Causes:
12391 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Cylinder 1 Injector Circuit Low
- Fuel Rail/System Pressure - Too High
- O2 Sensor Heater Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 12391 Code
- Inspect all the connections exhaust gas recirculation flow 2, insufficient detected
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns