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VW Code 12103

12103 Description And Summary :

This code were stamped on VW Engine case coolant pump control, circuit range / performance retarded timing position, the engine might refuse to start direct ozone reduction catalyst temperature sensor, circuit high and pressure sensor for brake boost (g294), short to ground will delay your vw fault.

12103 Possible Causes:

12103 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Crankshaft Position Sensor B Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Clutch Position Sensor Circuit Malfunction

What To Check After Fixing 12103 Code

  • Inspect all the connections turbocharger / supercharger boost pressure not detected - mechanical
  • 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