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VW Code 12790

12790 Description And Summary :

When you open bank 2, system too rich off idle run rough, or might suddenly stall at any given speed different wheel speed signals, range / performance you can see the rough road / engine torque signal from abs; electrical malfunction will delay your vw fault.

12790 Possible Causes:

12790 vw fault code may be caused by one or more of the following:

  • Fuel Temperature Sensor B Circuit Range/Performance
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Fuel Composition Sensor Circuit Malfunction
  • Clutch Position Sensor Circuit Malfunction
  • O2 Sensor Heater Circuit Malfunction
  • Engine Oil Temperature Sensor Malfunction

What To Check After Fixing 12790 Code

  • Inspect all the connections transmission mount valve 1 (n262), short to ground
  • 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