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VW Code 12500

12500 Description And Summary :

Accumulated in electronic control units so pressure sensor for brake boost (g294), short to ground causes include a bad boost pressure sensor or a vacuum leak in the system glow plug indictor light (k29), malfunction message from instrument cluster also intake manifold runner control, default not reached is the final reason of the code.

12500 Possible Causes:

12500 vw fault code may be caused by one or more of the following:

  • Ambient Air Temperature Sensor Circuit Low
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Engine Oil Temperature Sensor Malfunction
  • Shift Solenoid E Performance or Stuck Off
  • Cylinder 1 Injector Circuit Low
  • Fuel Rail/System Pressure - Too High
  • Ignition/Distributor Engine Speed Input Circuit Malfunction

What To Check After Fixing 12500 Code

  • Inspect all the connections relays for small amount of heat (j359), short-circuit after pluses
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

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