OBD II Fault Code

  • OBD II P2531

OBD-II Code Powertrain Control Module (PCM) failure is defined as a Ignition Switch Run Position Circuit Low

When the vehicle is turned on, battery voltage is sent to all the electrical systems on the vehicle. The Battery Control Module monitors this voltage to make sure it is correct. If the Battery Control Module detects the voltage is too low, code P2531 will set.

Common Problems That Trigger the P2531 Code

  • Ignition switch failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue

Common Repairs Needed for the P2531 Code

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