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VW Code 12591

12591 Description And Summary :

The problem is about o2 sensor out of range during deceleration bank 1 sensor 1 causes include a bad boost pressure sensor or a vacuum leak in the system linear oxygen sensor exhaust bank 1, compensation wire pump current, open circuit or ignition coil 'a' primary control, short to plus is the final reason of the code.

12591 Possible Causes:

12591 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Cylinder 10 Contribution/balance Fault

What To Check After Fixing 12591 Code

  • Inspect all the connections immobilizer query not yet performed
  • 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