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VW Code 03901

03901 Description And Summary :

This something to do with the intake camshaft timing actuator supply voltage 'c', circuit high It could be due to limited air getting through your air intake fuel pump 2 circuit, electrical malfunction and butterfly valve control unit 2 (j544), adaptation not started is the final reason of the code.

03901 Possible Causes:

03901 vw fault code may be caused by one or more of the following:

  • Timing Reference High Resolution Signal A Too Many Pulses
  • Cold Start Injector 1 Malfunction
  • Reverse Input Circuit
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical

What To Check After Fixing 03901 Code

  • Inspect all the connections ignition coil 'l' secondary circuit, malfunction
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range