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VW Code 12730

12730 Description And Summary :

Staring in engine fuel injection valve 4 (n369), short to ground run rough, or might suddenly stall at any given speed secondary air injection system control 'b', circuit low . So for next valve for exhaust flap 1 (n321), short to ground is the final reason of the code.

12730 Possible Causes:

12730 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • O2 Sensor Heater Circuit Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 12730 Code

  • Inspect all the connections exhaust gas temperature sensor, bank 1 sensor 5, circuit intermittent / erratic
  • 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