JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza Engine & Transmission Lambda sensor.

Lambda sensor.

Lambda sensor.

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phaebo
Senior Member
285
29-05-2021, 10:12 AM
#11
this is what i found on the internet

P0125 Lexus - Insufficient Coolant Temperature for Closed Loop Fuel Control



Possible causes
- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection



also check this topic sounds like it could be the solution
http://www.outlawjapclub.co.uk/forum/sho...hp?t=10967
phaebo
29-05-2021, 10:12 AM #11

this is what i found on the internet

P0125 Lexus - Insufficient Coolant Temperature for Closed Loop Fuel Control



Possible causes
- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection



also check this topic sounds like it could be the solution
http://www.outlawjapclub.co.uk/forum/sho...hp?t=10967

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