DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control: Notes
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
Trouble symptom:
Engine does not return to idle.
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>CLEAR MEMORY MODE>OPERATION
., and inspection mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>INSPECTION MODE>PROCEDURE
.
- CHECK ENGINE COOLANT
.
Check the following items:
- Amount of engine coolant
- Engine coolant freeze
- Contamination of engine coolant
Is the check result OK?
Yes: Go to 2 .
No: Fill or replace the engine coolant. Ref. to COOLING (H4DO)>Engine Coolant>REPLACEMENT .
- CHECK THERMOSTAT
.
Check the thermostat.
Does the thermostat remain opened?
Yes: Replace the thermostat, Ref. to COOLING (H4DO)>THERMOSTAT .
No: Replace the engine coolant temperature sensor. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>ENGINE COOLANT TEMPERATURE SENSOR .