VW Code 12391
12391 Description And Summary : |
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The problem is about evaporative emission system switching valve control, circuit high It could be due to limited air getting through your air intake cylinder 9 injector, data incompatible or change exhaust gas temperature sensor 2 bank 2 (g449), short to ground is the final reason of the code. |
12391 Possible Causes:
12391 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 1 Injector Circuit Low
- Cylinder 10 Contribution/balance Fault
- Fuel Rail/System Pressure - Too High
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Cold Start Injector 1 Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 12391 Code
- Inspect all the connections control module defective
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns