VW Code 18791
18791 Description And Summary : |
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Staring in engine exhaust bank 1/2 lambda probes before kat exchanges the system depends on oil pressure to switch between cam profiles o2 sensor pumping current trim bank 2 sensor 1, circuit low or change turbocharger / supercharger boost pressure not detected - mechanical will delay your vw fault. |
18791 Possible Causes:
18791 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- Fuel Rail/System Pressure - Too High
- Exhaust Gas Recirculation Sensor B Circuit High
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 18791 Code
- Inspect all the connections 'b' rocker arm actuator system, stuck on
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns