P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control
P0125 is an OBD-II diagnostic trouble code meaning: Insufficient Coolant Temperature for Closed Loop Fuel Control. Common causes: thermostat malfunction, low coolant level. Estimated repair cost: $22–111.
Symptoms
- Increased fuel consumption
- Unstable engine operation at idle
- Extended engine warm-up time
Causes
- Thermostat malfunction
- Low coolant level
- Coolant temperature sensor malfunction
- Problems with sensor wiring or contacts
How to Fix
- Check the coolant level and add if necessary
- Check thermostat operation
- Check the coolant temperature sensor and its circuit
- Replace faulty components
Related codes
Error P0125 by Vehicle Brand
FAQ
What does the P0125 code mean?
P0125 is an OBD-II diagnostic trouble code that indicates: Insufficient Coolant Temperature for Closed Loop Fuel Control
What causes a P0125 error code?
The most common causes of P0125 include: Thermostat malfunction; Low coolant level; Coolant temperature sensor malfunction; Problems with sensor wiring or contacts.
How do I fix a P0125 diagnostic trouble code?
To fix P0125: Check the coolant level and add if necessary. Check thermostat operation. Check the coolant temperature sensor and its circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0125?
Limited driving only, diagnose soon
How much does it cost to fix P0125?
The estimated repair cost for P0125 is $22–111. Actual cost depends on your vehicle, location, and labor rates.
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