P0125 -Insufficient Coolant Temperature For Closed Loop Fuel Control

P0125 -Insufficient Coolant Temperature For Closed Loop Fuel Control

Description

Indicates the ECT
sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting engine.

Possible Causes

● ● Insufficient warm up
time
● Low engine coolant level
● Leaking or stuck open thermostat
● Malfunctioning ECT sensor

Diagnostic Aides

Compare ECT PID to
thermostat specification when vehicle is at operating temperature. Temperature readings should be similar.

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