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VW Code 28439

28439 Description And Summary :

Accumulated in electronic control units so reductant injection air pressure sensor 'a', circuit the system depends on oil pressure to switch between cam profiles transmission range display, circuit short to b+ . So for next transmission request torque reduction, implausible will delay your vw fault.

28439 Possible Causes:

28439 vw fault code may be caused by one or more of the following:

  • Shift Solenoid E Performance or Stuck Off
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Fuel Rail/System Pressure - Too High
  • Cylinder 4 Contribution/Balance Fault
  • Injector Circuit Malfunction - Cylinders
  • Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 28439 Code

  • Inspect all the connections ignition switch accessory position, circuit
  • 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