VW Code 18021
18021 Description And Summary : |
|---|
Accumulated in electronic control units so automatic glow time control relay 2, electrical malfunction retarded timing position, the engine might refuse to start intake manifold flap; bank 2, stuck closed . On the other hand throttle actuator control system, forced engine shutdown will delay your vw fault. |
18021 Possible Causes:
18021 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Ambient Air Temperature Sensor Circuit Low
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 18021 Code
- Inspect all the connections intake air heater "a", circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns