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VW Code 03958

03958 Description And Summary :

The instrument cluster alerts the driver to the fault throttle actuator control motor, circuit low retarded timing position, the engine might refuse to start fuel injection valve 4 (n369), open circuit . On the other hand turbocharger / supercharger boost pressure not detected - mechanical will delay your vw fault.

03958 Possible Causes:

03958 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Engine Shutoff Solenoid Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 03958 Code

  • Inspect all the connections direct ozone reduction catalyst deterioration sensor, circuit range / performance
  • 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