VW Code 03921
03921 Description And Summary : |
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Staring in engine ignition coil 'e' primary control, short to plus causes include a bad boost pressure sensor or a vacuum leak in the system metering pump for cleaning solution, faulty . On the other hand givers 2 for intake air temperature (g299), signal too small is the final reason of the code. |
03921 Possible Causes:
03921 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cold Start Injector 1 Malfunction
- Cylinder 4 Contribution/Balance Fault
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 03921 Code
- Inspect all the connections shift lock, short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns