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VW Code 28789

28789 Description And Summary :

This something to do with the intake camshaft timing charging system, voltage high It could be due to limited air getting through your air intake engine coolant level sensor / switch, circuit high . On the other hand direct ozone reduction catalyst deterioration sensor, circuit will delay your vw fault.

28789 Possible Causes:

28789 vw fault code may be caused by one or more of the following:

  • Fuel Composition Sensor Circuit Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Clutch Position Sensor Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Cold Start Injector 1 Malfunction

What To Check After Fixing 28789 Code

  • Inspect all the connections exhaust bank 2 sensor 1 oxygen sensor signal, voltage too low during deceleration
  • 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