AutoCodes - Toyota - P0125 2002 TOYOTA HIGHLANDER

P0125 2002 TOYOTA HIGHLANDER Code - Insufficient Coolant Temperature for Closed Loop Fuel Control

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3
Table of contents

|P0125 2002 TOYOTA HIGHLANDER code 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

|How do I fix the P0125 2002 TOYOTA HIGHLANDER code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the P0125 2002 TOYOTA HIGHLANDER code

Labor: 1.0

The cost of diagnosing the P0125 2002 TOYOTA HIGHLANDER code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0125 2002 TOYOTA HIGHLANDER code detected?

The Engine Control Module (ECM) monitors the ECT signal voltage after engine start-up. If, after sufficient time has passed, the sensor still reports that the engine is not warm enough for closed-loop fuel control, the ECM interprets this as a fault in the sensor or cooling system and sets a Detected Trouble Code (DTC).
Example:
The ECT is 0C (32F) at engine start. After 5 minutes running time, the ECT sensor still indicates that the engine is not warm enough to begin active feedback control of the air-fuel ratio. The ECM interprets this as a fault in the sensor or cooling system and sets a DTC.

|What are P0125 2002 TOYOTA HIGHLANDER code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|P0125 2002 TOYOTA HIGHLANDER code description

The Engine Coolant Temperature (ECT) sensor is used to monitor the temperature of the engine coolant. The resistance of the sensor varies with the actual coolant temperature. The Engine Control Module (ECM) applies a voltage to the sensor and the varying resistance of the sensor causes the signal voltage to vary.
OBDII Code P0125 2002 Toyota Highlander - Insufficient Coolant Temperature for Closed Loop Fuel Control - AutoCodes.com

|Need more information with the P0125 2002 TOYOTA HIGHLANDER code?

Need more information on how to fix the P0125 2002 TOYOTA HIGHLANDER code?
Get Access to Factory Service Manuals

|Need help with a P0125 2002 TOYOTA HIGHLANDER code?

Get the P0125 2002 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area

|P0125 2002 TOYOTA HIGHLANDER code comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P0125 2002 Toyota Highlander code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧
Repair Importance Level: 3
 
1=Low 2=Medium 3=High What is this?
Repair Difficulty Level: 2
 
1=Easy 2=Moderate 3=Hard What is this?