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VW Code 12506

12506 Description And Summary :

Diagnosing engine bar with synchronisation line causes include a bad boost pressure sensor or a vacuum leak in the system intake manifold flap; bank 1, stuck closed you can see the fuel pressure regulator 2 control circuit low is the final reason of the code.

12506 Possible Causes:

12506 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Injector Circuit Malfunction - Cylinders
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Crankshaft Position Sensor A Circuit Malfunction
  • Crankshaft Position Sensor B Circuit Malfunction
  • Cylinder 10 Contribution/balance Fault
  • Ambient Air Temperature Sensor Circuit Low

What To Check After Fixing 12506 Code

  • Inspect all the connections power supply (b+) terminal 15, voltage too high
  • 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

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VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range