P2600 – Coolant Pump Control Circuit/Open

Description

The ECM detects an open circuit in the coolant pump control circuit.

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Symptoms

  • Overheating
  • Check engine light
  • Reduced power

Causes

  • Faulty coolant pump
  • Wiring open
  • ECM fault

Diagnosis

  • Check coolant pump
  • Inspect wiring
  • Test ECM

Repair

  • Replace coolant pump
  • Repair wiring