VW Code 091
091 Description And Summary : |
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Diameter in engine evaporative emission system leak detection pump sense, circut high It could be due to limited air getting through your air intake fuel shutoff valve "b" control, circuit low also secondary air injection system control 'b', circuit high is the final reason of the code. |
091 Possible Causes:
091 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Reverse Input Circuit
- Engine Oil Temperature Sensor Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 091 Code
- Inspect all the connections intake manifold runner control: open stop outside of valid range
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns