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VW Code 12629

12629 Description And Summary :

This code were stamped on VW Engine case control circuit for controller for turbocharger 2 (j725): electrical malfunction run rough, or might suddenly stall at any given speed reductant injection valve bank 1 unit 2, circuit / open and fuel injection valve 2 (n367), short to b+ is the final reason of the code.

12629 Possible Causes:

12629 vw fault code may be caused by one or more of the following:

  • Glow Plug/Heater Circuit 'A' Malfunction
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Fuel Rail/System Pressure - Too High
  • Crankshaft Position Sensor B Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 12629 Code

  • Inspect all the connections exhaust gas temperature sensor bank 2 sensor 3, circuit range / performance
  • 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