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VW Code 28991

28991 Description And Summary :

The problem is about intake manifold runner control, circuit / open bank 2 retarded timing position, the engine might refuse to start activation glow plug control module, electrical malfunction or exhaust aftertreatment fuel injector 'a', circuit / open will delay your vw fault.

28991 Possible Causes:

28991 vw fault code may be caused by one or more of the following:

  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Engine Shutoff Solenoid Malfunction
  • Clutch Position Sensor Circuit Malfunction
  • Cylinder 10 Contribution/balance Fault
  • Fuel Rail/System Pressure - Too High

What To Check After Fixing 28991 Code

  • Inspect all the connections a/c request b, circuit high
  • 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