Po125

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Apr 14, 2025 | 10:42 PM

bigboat430

Thread Starter

9th Gear

Joined: Jan 2025

Posts: 9

Likes: 0

From: arizona

Po125

can someone help me figure out how to fix p0125 i’ve looked up a few things but all of those things have been replaced

Apr 15, 2025 | 06:07 AM

weldthedif

Instructor

Joined: Jul 2017

Posts: 929

Likes: 238

From: South Carolina

The P0125 code indicates an "Insufficient Coolant Temperature for Closed Loop Fuel Control". It means the engine control module (ECM) isn't detecting the engine's coolant temperature is high enough for the engine to run in closed-loop mode. This typically suggests a problem with the Engine Coolant Temperature (ECT) sensor or related wiring.

Apr 15, 2025 | 08:27 AM

tammap

Instructor

Joined: May 2007

Posts: 811

Likes: 361

From: CA

Quote:

Originally Posted by bigboat430

can someone help me figure out how to fix p0125 i’ve looked up a few things but all of those things have been replaced

On some models, Lexus does not adhere to the SAE standard definition for DTC P0125 which is related to the ECT. Google does not work in this case for P0125.

You can see the diagnostic chart for complete diagnostic information regarding this codeHERE.

Best of luck!