Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2014FORESTER 2.5I, ENG CD FB25BA, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 9 (ENGINE CONTROL SYSTEM (DIAGNOSTICS) (H4DOTC))DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROLTROUBLE SYMPTOM
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard Trans
DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control: Trouble Symptom
2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Trouble Symptom
WARNING: This page is about a different variant/trim than selected.
Engine does not return to idle.
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode < Ref. to
OPERATION , Clear Memory Mode. >, and Inspection Mode < Ref. to
PROCEDURE , Inspection Mode. >.
DTC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK TIRE SIZE. | Is the tire size as specified and the same size as three other wheels? | Go to step 2 . | Replace the tire. |
| 2 CHECK ENGINE COOLANT. Check the following items:
|
Is the engine coolant normal? | Go to step 3 . | Fill or replace the engine coolant. < Ref. to REPLACEMENT , Engine Coolant. > |
| 3 CHECK THERMOSTAT. | Does the thermostat remain opened? | Replace the thermostat. < Ref. to THERMOSTAT . > | Replace the engine coolant temperature sensor. < Ref. to ENGINE COOLANT TEMPERATURE SENSOR . > |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.