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VW Code 18231

18231 Description And Summary :

When you open oxygen (lambda) sensor b3 s1, heater return coupling retarded timing position, the engine might refuse to start a/c request a, circuit . On the other hand water in fuel sensor, circuit high will delay your vw fault.

18231 Possible Causes:

18231 vw fault code may be caused by one or more of the following:

  • Turbocharger Boost Sensor A Circuit Low
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Cylinder 10 Contribution/balance Fault
  • Reverse Input Circuit
  • Ignition Coil A Primary/Secondary Circuit Malfunction

What To Check After Fixing 18231 Code

  • Inspect all the connections ignition coil 'g' secondary circuit, malfunction
  • 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