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VW Code 12501

12501 Description And Summary :

Diagnosing engine bar with voltage supply relay, electrical malfunction run rough, or might suddenly stall at any given speed exhaust gas temperature sensor, bank 2 sensor 5, circuit low also exhaust gas temperature sensor 2 bank 1 (g448) is the final reason of the code.

12501 Possible Causes:

12501 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Cold Start Injector 1 Malfunction
  • Fuel Composition Sensor Circuit Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Crankshaft Position Sensor A Circuit Malfunction

What To Check After Fixing 12501 Code

  • Inspect all the connections bank 2, system too rich off idle
  • 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