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P1617 – ECM/PCM Overtemperature

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Symptoms

  • Erratic behavior
  • Limp mode

Causes

  • Poor ventilation
  • Short circuit
  • ECM failure

Diagnosis

  • Check cooling
  • Inspect wiring
  • Scan ECU

Repair

  • Improve ventilation
  • Repair wiring
  • Replace ECM
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