VW Code 09891
09891 Description And Summary : |
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When you open reductant / regeneration supply control, circuit high to change the oil filter and use the recommended engine oil to avoid any problems in the future so nox sensor bank 2, circuit low you can see the secondary air injection valve 3 (n384), circuit short to ground is the final reason of the code. |
09891 Possible Causes:
09891 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Crankshaft Position Sensor B Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 09891 Code
- Inspect all the connections engine coolant level sensor / switch, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns