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P1792 – Transmission Control Module Overtemperature

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Symptoms

  • Limp mode
  • Erratic shifting

Causes

  • Poor ventilation
  • Short circuit
  • TCM failure

Diagnosis

  • Check cooling
  • Inspect wiring
  • Scan TCM

Repair

  • Improve ventilation
  • Repair wiring
  • Replace TCM
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