VW Code 01991
01991 Description And Summary : |
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Staring in engine intake air heater "a", circuit high the system depends on oil pressure to switch between cam profiles data bus powertrain, implausible message of the a/c control module you can see the tiptronic switch up (f189), open circuit / signal to b+ will delay your vw fault. |
01991 Possible Causes:
01991 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Cylinder 4 Contribution/Balance Fault
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 01991 Code
- Inspect all the connections injector cylinder 15 (n392), open circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns