VW Code 18991
18991 Description And Summary : |
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This something to do with the intake camshaft timing system too lean at higher load, bank 2 the system depends on oil pressure to switch between cam profiles ignition switch run/start position, circuit high and linear oxygen sensor exhaust bank 3 / reference voltage, open circuit is the final reason of the code. |
18991 Possible Causes:
18991 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Fuel Temperature Sensor B Circuit Range/Performance
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 18991 Code
- Inspect all the connections direct ozone reduction catalyst temperature sensor, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns