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Home >> Mazda >> 1997 >> MPV ES, 3.0 2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> DTC P0125 - Excessive Time To Enter Closed Loop >> Diagnosis & Repair Procedure

Diagnosis & Repair Procedure

  1. Inspect ECT sensor. See appropriate SYSTEM/COMPONENT TESTS article. Replace as needed. If ECT sensor is okay, go to next step.
  2. Inspect engine cooling system. Repair as needed. If cooling system is okay, go to next step.
  3. Erase DTC. See CLEARING CODES  . If DTC is present, replace ECM. If DTC is not present, intermittent system malfunction may have caused DTC to originally set.
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