LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 2000 >> Eclipse GS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0125: Excessive Time To Enter Closed Loop Fuel Control >> Diagnostic Procedure (2.4L)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Procedure (2.4L)

  1. Check for exhaust leaks. Repair as necessary, then go to step  11 . If there are no exhaust leaks, go to next step.
  2. Check intake system for vacuum leaks. Repair as necessary, then go to step  11 . If there are no intake system leaks, go to next step.
  3. Check front HO2S. See SENSORS under ENGINE SENSORS & SWITCHES in SYSTEM & COMPONENT TESTING article. Replace as necessary, then go to step  11 . If front HO2S is okay, go to next step.
  4. Check front HO2S connector. Repair as necessary, then go to step  11 . If connector is okay, go to next step.
  5. Disconnect all fuel injector 2-pin connectors. Check resistance between fuel injector terminals. Resistance should be 13-16 ohms at 68°F (20°C). Replace any fuel injector not within specifications, then go to step  11 . If each resistance is within specifications, go to next step.
  6. Check fuel injector connectors. Repair as necessary, then go to step  11 . If connectors are okay, go to next step.
  7. Check ECM connectors C-49 and C-60, or PCM connectors C-50, C-54 and C-57. Repair as necessary, then go to step  11 . If connectors are okay, go to next step.
  8. Check wiring between front HO2S and ECM connector C-60, or PCM connectors C-54 and C-57. Repair as necessary, then go to step  11 . If wiring is okay, go to next step.
  9. Check wiring between fuel injectors and ECM connector C-49, or PCM connector C-50. Repair as necessary, then go to step  11 . If wiring is okay, go to next step.
  10. Perform fuel pressure test. See FUEL SYSTEM in BASIC DIAGNOSTIC PROCEDURES article. Repair as necessary, then go to next step. If fuel pressure is okay, replace ECM/PCM, then go to next step.
  11. Remove all test equipment and install all disconnected/removed components. Using scan tool, clear DTCs. Test drive vehicle following other monitor drive cycle pattern. See OBD-II DRIVE CYCLES under VERIFYING REPAIRS in SELF-DIAGNOSTICS - INTRODUCTION article. Check for DTCs. Confirm DTC does not reset. See VERIFYING REPAIRS in SELF-DIAGNOSTICS - INTRODUCTION article.
scientia non olet · About LEMON Manuals