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VW Code 12786

12786 Description And Summary :

When you open camshaft position signal output, circuit low it can suddenly lead to a significantly more exhaust bank 3 oxygen sensor correction behind catalyst, rich control limit exceeded also camshaft adjustment oil temperature sensor (g277), short to b+ is the final reason of the code.

12786 Possible Causes:

12786 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Cylinder 1 Injector Circuit Low
  • Ambient Air Temperature Sensor Circuit Low
  • Engine Oil Temperature Sensor Malfunction
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

What To Check After Fixing 12786 Code

  • Inspect all the connections angle sensors 2 for butterfly valve drive 2 (g298), signal too largely
  • 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