Engine-Codes.com
Engine-Codes – GMC – P25AF 2016 GMC Sierra

P25AF 2016 GMC Sierra Code - Coolant Temperature Control Module Requested MIL Illumination

Quick Answer

The P25AF diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the Coolant Temperature Control Module has requested the Malfunction Indicator Lamp (MIL) to illuminate on the vehicle's dashboard. Common causes include Faulty coolant temperature sensor, Malfunctioning coolant temperature control module, Low coolant level. 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
P25AF 2016 GMC Sierra indicates Coolant Temperature Control Module Requested MIL Illumination.
Common causes
Common causes include Faulty coolant temperature sensor, Malfunctioning coolant temperature control module, Low coolant level.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P25AF 2016 GMC Sierra Description

The P25AF diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the Coolant Temperature Control Module has requested the Malfunction Indicator Lamp (MIL) to illuminate on the vehicle's dashboard. This code is typically triggered when the module detects an issue with the coolant temperature control system, which can have various implications for the vehicle's performance.

OBDII Code P25AF 2016 GMC Sierra - Coolant Temperature Control Module Requested MIL Illumination
P25AF 2016 GMC Sierra Code - Coolant Temperature Control Module Requested MIL Illumination

Common Causes of P25AF 2016 GMC Sierra

  1. Faulty coolant temperature sensor
  2. Malfunctioning coolant temperature control module
  3. Low coolant level
  4. Clogged radiator
  5. Electrical issues in the coolant temperature control system

Symptoms of P25AF 2016 GMC Sierra

  1. Illumination of the Check Engine Light
  2. Engine overheating
  3. Poor fuel efficiency
  4. Rough idling or stalling
  5. Reduced heater performance

How to Fix P25AF 2016 GMC Sierra

  1. Diagnose the issue using a scan tool to retrieve the specific DTC and pinpoint the root cause.
  2. Inspect the coolant temperature sensor and module for any signs of damage or malfunction.
  3. Check the coolant level and quality, ensuring it is at the proper level and free of contaminants.
  4. Test the radiator for any blockages or restrictions that may be impeding coolant flow.
  5. Repair or replace any faulty components, clear the DTC, and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P25AF 2016 GMC Sierra

The cost of repairing a P25AF code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. On average, the repair cost for this type of problem can range from $200 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and engine type. It's recommended to obtain quotes from local shops to get a more accurate estimate.

Need more information about the P25AF 2016 GMC Sierra code?

Need more information on how to fix the P25AF 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P25AF 2016 GMC Sierra 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 P25AF 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P25AF in a 2016 GMC Sierra?

- The common symptoms include the check engine light (MIL) illuminating on the dashboard, issues with coolant temperature control, and potential engine performance problems.

2. What can cause the OBDII code P25AF to trigger in a 2016 GMC Sierra?

- The code P25AF is typically triggered by a faulty coolant temperature control module or issues with the temperature control sensor.

3. How serious is the OBDII code P25AF in a 2016 GMC Sierra?

- While the code itself may not cause immediate harm, it is important to address it promptly to prevent potential engine damage or overheating issues.

4. Can I continue driving my 2016 GMC Sierra with the OBDII code P25AF present?

- It is not recommended to ignore the code and continue driving, as it can lead to further complications with the engine's cooling system.

5. How can I diagnose the OBDII code P25AF in my 2016 GMC Sierra?

- Diagnosing the code typically involves using an OBDII scanner to retrieve the specific error code and then inspecting the coolant temperature control module and sensor for any issues.

6. What are some DIY repair tips for addressing the OBDII code P25AF in a 2016 GMC Sierra?

- DIY repair tips may include checking and potentially replacing the coolant temperature control module, inspecting and cleaning electrical connections, and ensuring the cooling system is functioning properly.

7. Will resetting the OBDII code P25AF in a 2016 GMC Sierra make it go away permanently?

- Simply resetting the code may temporarily turn off the check engine light, but the underlying issue causing the code will persist until properly diagnosed and repaired.

8. How much does it typically cost to repair the OBDII code P25AF in a 2016 GMC Sierra?

- Repair costs can vary depending on the exact cause of the code, but it may involve replacing the coolant temperature control module or addressing related cooling system issues, which can range from moderate to expensive.

9. Can a mechanic easily fix the OBDII code P25AF in a 2016 GMC Sierra?

- A qualified mechanic should be able to diagnose and repair the issue causing the code, ensuring proper functioning of the coolant temperature control system.

10. Are there any recalls or technical service bulletins related to the OBDII code P25AF in a 2016 GMC Sierra?

- It is recommended to check with the manufacturer or authorized service centers for any recalls or technical service bulletins related to the code P25AF in your specific vehicle model.

Discuss the causes and fixes for P25AF 2016 GMC Sierra OBDII Code

Submit a New Comment

Code P25AF 2016 GMC Sierra comments

No comments found for this page.