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Acura DTC

Acura DTC P0125

Manufacture

Acura DTC

Code

P0125

Definition

Engine Coolant Temperature (ECT) Sensor 1 Malfunction Slow Response

Description

As the engine coolant warms, the ECT sensor 1 resistance decreases, and the PCM detects a low signal voltage. If the ECT sensor 1 output voltage does not reach a specified temperature at which closed-loop control for stoichiometric air fuel ratio starts within a set time, depending on the initial coolant temperature after starting the engine, the PCM detects a malfunction. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.

Cause

  • Poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the PCMLow coolant levelFaulty thermostatFaulty ECT sensor (1)Faulty PCM

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