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VW Code 12331

12331 Description And Summary :

Staring in engine cannot activate controller reply function due to another error with equal priority to change the oil filter and use the recommended engine oil to avoid any problems in the future so direct ozone reduction catalyst, efficiency below threshold also cylinder 5 injector, data incompatible will delay your vw fault.

12331 Possible Causes:

12331 vw fault code may be caused by one or more of the following:

  • Cylinder 10 Contribution/balance Fault
  • Shift Solenoid E Performance or Stuck Off
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Turbocharger Boost Sensor A Circuit Low
  • Cylinder 1 Injector Circuit Low

What To Check After Fixing 12331 Code

  • Inspect all the connections pressure sensor for brake boost (g294), implausible signal
  • 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