Code result
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control
Moderate severity
What it means
The engine has run long enough that closed-loop fuel control should be active, but the coolant temperature has not risen high enough. Often caused by a stuck-open thermostat or a failed coolant temperature sensor.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Thermostat stuck open
highOne of the most commonly reported causes for this code — check this first.
Coolant temp sensor reading low
mediumA plausible cause — test and verify before replacing parts.
Related help
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