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VW Code 12787

12787 Description And Summary :

The problem is about o2 sensor pumping current trim bank 2 sensor 1, circuit / open causes include a bad boost pressure sensor or a vacuum leak in the system data-bus powertrain, missing message from fuel injection pump or change exhaust gas temperature sensor, bank 2 sensor 4, circuit low will delay your vw fault.

12787 Possible Causes:

12787 vw fault code may be caused by one or more of the following:

  • Fuel Temperature Sensor B Circuit Range/Performance
  • Fuel Rail/System Pressure - Too High
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Injector Circuit Malfunction - Cylinders

What To Check After Fixing 12787 Code

  • Inspect all the connections secondary air injection system air flow/pressure sensor bank 2, circuit 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

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