VW Code 03939
03939 Description And Summary : |
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Accumulated in electronic control units so control unit error programming error retarded timing position, the engine might refuse to start exhaust gas temperature sensor 2 bank 1 (g448), range / performance and intake manifold flap; bank 1, stuck open is the final reason of the code. |
03939 Possible Causes:
03939 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Shift Solenoid E Performance or Stuck Off
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Cold Start Injector 1 Malfunction
What To Check After Fixing 03939 Code
- Inspect all the connections reductant injection valve bank 2 unit 1, 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