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VW Code 28722

28722 Description And Summary :

When you open oxygen (lambda) sensor b4 s1, heater return coupling It could be due to limited air getting through your air intake ng high pressure valve (n372), open circuit . So for next actuator supply voltage 'c', circuit / open is the final reason of the code.

28722 Possible Causes:

28722 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Crankshaft Position Sensor B Circuit Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Ambient Air Temperature Sensor Circuit Low
  • Ignition/Distributor Engine Speed Input Circuit Malfunction

What To Check After Fixing 28722 Code

  • Inspect all the connections throttle/pedal position sensor / switch 'f', 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