VW Code 04621
04621 Description And Summary : |
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Accumulated in electronic control units so glow plug indictor light (k29), malfunction message from instrument cluster run rough, or might suddenly stall at any given speed vehicle speed signal, circuit open also givers 2 for intake air temperature (g299), signal too small will delay your vw fault. |
04621 Possible Causes:
04621 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 04621 Code
- Inspect all the connections ignition coil 'j' primary control, 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