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P0125

ECT Sensor response (for closed loop fuel control)

ECT Sensor response (for closed loop fuel control)

Documented for: 2.0L gasoline; 2.5L/3.0L gasoline · System(s): EMS EOBD, EMS OBD II · Factory MIL flag: 2 · Default action: ECM Default: –EOT value substituted (no greater than 95 °C (203 °F) –Closed loop fuel metering inhibited –Adaptive fuel metering inhibited –Catalyst warm-up ignition retard inhibit…

Common causes

  • Low coolant level Contaminated coolant Engine coolant thermostat failure ECT Sensor to ECM sensing circuit: high resistance, open circuit or short circuit to high voltage Engine cooling fan stuck on high speed Above normal air flow through engine compartment due to accident damage and/ or missing panels

Quick checks

  • Confirm freeze-frame and conditions when the code set
  • Inspect connectors, grounds, and harness for the circuit named in the code
  • Compare live sensor values vs expected (unplugged/biased sensors are common)

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