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VW Code 12781

12781 Description And Summary :

This code were stamped on VW Engine case charging system, voltage low It could be due to limited air getting through your air intake activation starter relay 2, short to b+ also exhaust gas recirculation cooling system, performance is the final reason of the code.

12781 Possible Causes:

12781 vw fault code may be caused by one or more of the following:

  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Shift Solenoid E Performance or Stuck Off
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Crankshaft Position Sensor A Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Cold Start Injector 1 Malfunction

What To Check After Fixing 12781 Code

  • Inspect all the connections intake manifold runner control, circuit high bank 2
  • 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