AutoCodes – Lincoln – P0125 Lincoln

P0125 Lincoln Code - Insufficient Coolant Temperature for Closed Loop Fuel Control

Quick Answer

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0125 Lincoln indicates Insufficient Coolant Temperature for Closed Loop Fuel Control.
Common causes: Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 955

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 26, 2021

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0125 Lincoln Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

OBDII Code P0125 Lincoln - Insufficient Coolant Temperature for Closed Loop Fuel Control - AutoCodes.com — P0125 Lincoln Code - Insufficient Coolant Temperature for Closed Loop Fuel Control

What does this mean?

What are the Possible Causes of the DTC P0125 Lincoln?

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 to Fix the DTC P0125 Lincoln?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0125 Lincoln code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0125 Lincoln code?

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

Need Help with the Code?

Get the P0125 Lincoln code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0125 Lincoln Code

1. What are the common symptoms of OBDII code P0125 in a Lincoln?

- Common symptoms include the engine running colder than normal, decreased fuel efficiency, illuminated Check Engine light, and potential issues with emissions.

2. What are the possible causes of OBDII code P0125 in a Lincoln?

- Possible causes include a malfunctioning thermostat, low engine coolant level, faulty coolant temperature sensor, issues with the cooling system, or a problem with the engine control module.

3. How can I diagnose the cause of OBDII code P0125 in my Lincoln?

- You can diagnose the issue by checking the coolant level, testing the thermostat, inspecting the coolant temperature sensor, and ensuring the cooling system is functioning properly.

4. Can I continue driving my Lincoln with OBDII code P0125 present?

- It is not recommended to continue driving with this code present, as it can lead to decreased fuel efficiency and potential damage to the engine over time.

5. How can I repair OBDII code P0125 in my Lincoln?

- Repair options include replacing a faulty thermostat, topping up the engine coolant, replacing a malfunctioning coolant temperature sensor, or addressing any issues with the cooling system.

6. Is OBDII code P0125 a serious issue in a Lincoln?

- While it may not cause immediate harm to the vehicle, it is important to address this code promptly to prevent potential long-term damage and ensure optimal engine performance.

7. Can a DIY enthusiast fix OBDII code P0125 in a Lincoln?

- Depending on the root cause, some DIY enthusiasts may be able to address this code by following repair guides and utilizing basic tools. However, professional assistance may be necessary in some cases.

8. How long does it typically take to repair OBDII code P0125 in a Lincoln?

- The repair time can vary based on the cause of the code and the expertise of the individual performing the repair. It can range from a quick fix to a more involved repair requiring several hours.

9. Will resetting the Check Engine light resolve OBDII code P0125 in a Lincoln?

- Resetting the Check Engine light may temporarily turn it off, but the underlying issue causing the code will persist. It is important to diagnose and address the root cause of the code to prevent it from reoccurring.

10. Are there any preventative maintenance tips to avoid OBDII code P0125 in a Lincoln?

- Regularly checking and maintaining the cooling system, monitoring coolant levels, and addressing any issues promptly can help prevent OBDII code P0125 from appearing in your Lincoln.