logo

VW Code 28855

28855 Description And Summary :

Diagnosing engine bar with valve for exhaust flap 1 (n321), short to b+ the system depends on oil pressure to switch between cam profiles throttle actuator control system, forced limited rpm . So for next exhaust bank 4 sensor 1 oxygen sensor signal, implausibly rich will delay your vw fault.

28855 Possible Causes:

28855 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Cold Start Injector 1 Malfunction
  • Cylinder 1 Injector Circuit Low
  • Engine Shutoff Solenoid Malfunction
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Fuel Composition Sensor Circuit Malfunction

What To Check After Fixing 28855 Code

  • Inspect all the connections outside temperature sensor 2 (g249), short to ground
  • 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