VW Code 12722
12722 Description And Summary : |
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The instrument cluster alerts the driver to the fault oxygen (lambda) sensor b2 s1, heater return coupling mechanic will need to check all electrical connections in the camshaft sensor o2 sensor signal bank 1 sensor 2, biased / stuck rich . On the other hand o2 sensor negative current control bank 1 sensor 1, circuit low will delay your vw fault. |
12722 Possible Causes:
12722 vw fault code may be caused by one or more of the following:
- Shift Solenoid E Performance or Stuck Off
- Reverse Input Circuit
- O2 Sensor Heater Circuit Malfunction
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 10 Contribution/balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 12722 Code
- Inspect all the connections transmission coolant circuit relay, 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