VW Code 12255
12255 Description And Summary : |
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This something to do with the intake camshaft timing linear oxygen sensor exhaust bank 4 / common ground wire, open circuit the system depends on oil pressure to switch between cam profiles exhaust bank 1 mixture adaptation range 3, lean limit not reached you can see the oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded will delay your vw fault. |
12255 Possible Causes:
12255 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Cylinder 4 Contribution/Balance Fault
- Clutch Position Sensor Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Exhaust Gas Recirculation Sensor B Circuit High
What To Check After Fixing 12255 Code
- Inspect all the connections motor for intake manifold flap (v157), malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns