P2501 OBD II Trouble Code Generator Lamp/L Terminal Circuit High

How to easily diagnose, repair, and info on causes of a P2501 trouble code that indicates a high electrical condition in the Generator Lamp/L Terminal Circuit.

Symptoms of P2501 OBD II Trouble Code

  • Charging system lamp illumination
  • Engine drivability issues
  • Inadvertent engine shutoff
  • Delayed engine cranking
  • Other stored codes

Common Causes of P2501 OBD II Trouble Code

  • Open or shorted generator field control circuit
  • Blown fuse or burnt fusible link
  • Defective alternator/generator
  • Faulty PCM
  • PCM programming error

Severity of P2501 OBD II Trouble Code

A stored code P2501 could result in a variety of drivability concerns, including a no-start and/or dead battery condition. It should be classified as severe.