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C2509 Code – Transmission Engine Torque Select D

What are the Possible Causes of the Code C2509?
  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module (TCM) harness is open or shorted
  • Transmission Control Module (TCM) circuit poor electrical connection
  • Need help with this OBD II code? Our mechanics are available within west Michigan to help. Outside of our service area? Visit our Car Help Section where you can ask questions and get answers.

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