VW Code 12963
12963 Description And Summary : |
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Diagnosing engine bar with valve for pump - jet: cylinder 7 (n303), range / performance retarded timing position, the engine might refuse to start data bus powertrain, missing message from diagnostic interface-control module . So for next fuel mixture control adjustment range 1, higher limit not reached will delay your vw fault. |
12963 Possible Causes:
12963 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 12963 Code
- Inspect all the connections evaporative emissions (evap) fuel vapour 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