P25AF GMC Code - Coolant Temperature Control Module Requested MIL Illumination
Quick Answer
Control modules constantly monitor the vehicle for any condition which may adversely affect vehicle performance. Common causes include Check Coolant Temperature Control Module for codes, Faulty Coolant Temperature Control Module. 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 GMC indicates Coolant Temperature Control Module Requested MIL Illumination.
- Common causes
- Common causes include Check Coolant Temperature Control Module for codes, Faulty Coolant Temperature Control Module.
- 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.
Code P25AF GMC Description
The DTC will be set when the ECM receives a serial data message from the Coolant Temperature Control Module indicating that DTC has been set in the module.
What are the Possible Causes of the DTC P25AF GMC?
- Check Coolant Temperature Control Module for codes
- Faulty Coolant Temperature Control Module
How to Fix the DTC P25AF GMC?
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 P25AF GMC 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 P25AF GMC code?
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Need Help with the Code?
Get the P25AF GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P25AF 2014 GMC Sierra — Coolant Temperature Control Module Requested MIL Illumination
- P25AF 2015 GMC Sierra — Coolant Temperature Control Module Requested MIL Illumination
- P25AF 2016 GMC Sierra — Coolant Temperature Control Module Requested MIL Illumination
- P25AF 2017 GMC Sierra — Coolant Temperature Control Module Requested MIL Illumination
- P25AF 2018 GMC Sierra — Coolant Temperature Control Module Requested MIL Illumination
Frequently Asked Questions about P25AF GMC Code
1. What are the common symptoms of OBDII code P25AF in a GMC vehicle?
Common symptoms include the check engine light illuminating, engine overheating, reduced engine performance, and potential coolant leaks.
2. What can cause the OBDII code P25AF to trigger in a GMC vehicle?
The code P25AF is typically triggered by a malfunction in the coolant temperature control module, which may be due to electrical issues, sensor failures, or software glitches.
3. How serious is the OBDII code P25AF in a GMC vehicle?
The code P25AF should be addressed promptly to prevent potential engine damage from overheating or coolant system failures. Ignoring the issue can lead to more costly repairs down the line.
4. What are some DIY repair tips for fixing the OBDII code P25AF in a GMC vehicle?
DIY repair tips may include checking for loose electrical connections, inspecting coolant levels and quality, and ensuring proper sensor functionality. However, it is recommended to consult a professional mechanic for an accurate diagnosis and repair.
5. Can driving with the OBDII code P25AF active in a GMC vehicle cause further damage?
Continuing to drive with the code P25AF active can lead to engine overheating, which may cause severe damage to engine components. It is advisable to address the issue as soon as possible.
6. How much does it typically cost to repair the OBDII code P25AF in a GMC vehicle?
The cost of repairing the OBDII code P25AF can vary depending on the extent of the issue, parts needed, and labor costs. It is recommended to get a few quotes from different mechanics to compare prices.
7. Is it safe to clear the OBDII code P25AF in a GMC vehicle without fixing the underlying issue?
Clearing the code without addressing the root cause may temporarily turn off the check engine light, but the problem will likely reoccur. It is essential to diagnose and repair the issue to prevent further complications.
8. Can extreme weather conditions affect the triggering of the OBDII code P25AF in a GMC vehicle?
Extreme weather conditions, such as very high or low temperatures, can potentially affect the performance of the coolant temperature control module and trigger the OBDII code P25AF. Proper maintenance is crucial in such conditions.
9. Will the OBDII code P25AF in a GMC vehicle cause a decrease in fuel efficiency?
Yes, the OBDII code P25AF can cause a decrease in fuel efficiency due to engine inefficiency resulting from coolant temperature control module malfunctions. Addressing the issue can help improve fuel economy.
10. How long does it typically take to repair the OBDII code P25AF in a GMC vehicle?
The repair time for the OBDII code P25AF can vary depending on the exact cause of the issue and the availability of parts. In most cases, the repair can be completed within a few hours to a day.
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