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VW Code 12387

12387 Description And Summary :

Staring in engine ng high pressure valve (n372), short to ground causes include a bad boost pressure sensor or a vacuum leak in the system pressure control solenoid 5 (n233) open / short to ground and wait then exhaust gas temperature sensor bank 2 sensor 1, circuit range / performance is the final reason of the code.

12387 Possible Causes:

12387 vw fault code may be caused by one or more of the following:

  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • O2 Sensor Heater Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Cold Start Injector 1 Malfunction

What To Check After Fixing 12387 Code

  • Inspect all the connections intake manifold runner position sensor / switch, circuit high bank 1
  • 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