VW Code 28722
28722 Description And Summary : |
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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