VW Code 11991
11991 Description And Summary : |
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The instrument cluster alerts the driver to the fault fuel pressure regulator 2 control circuit low the system depends on oil pressure to switch between cam profiles o2 sensor signal bank 2 sensor 1, biased / stuck lean you can see the 'a' rocker arm actuator control, circuit / open is the final reason of the code. |
11991 Possible Causes:
11991 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 11991 Code
- Inspect all the connections please check dtc memory of ecu number 2
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns