DTC P0125: Notes

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Notes
DTC P0125 [L3] DETECTION CONDITIONS AND POSSIBLE CAUSES

DTC P0125 Excessive time to enter closed loop fuel control
DETECTION CONDITION 
  • The PCM monitors the ECT sensor signal after engine is started while the engine is cold. If the engine coolant temperature does not reach the expected temperature for specified period, the PCM determines that it has taken an excessive amount of time for the engine coolant temperature to reach the temperature necessary to start closed-loop fuel control.

Diagnostic support note 
  • This is a continuous monitor (Engine cooling system).
  • MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is available.
  • DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Cooling system malfunction
  • Poor connection of connectors
  • ECT sensor malfunction
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.