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Engine-Codes – GMC – P15F7 GMC

P15F7 GMC Code - Rear Object Detection Control Module Torque Request Signal Message Counter Incorrect

Quick Answer

The P15F7 code indicates a malfunction in the rear object detection control module, specifically related to the torque request signal message counter. Common causes include Faulty rear object detection control module that may require replacement, Damaged wiring or connectors associated with the torque request signal, Malfunctioning sensors that provide input to the 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
P15F7 GMC indicates Rear Object Detection Control Module Torque Request Signal Message Counter Incorrect.
Common causes
Common causes include Faulty rear object detection control module that may require replacement, Damaged wiring or connectors associated with the torque request signal, Malfunctioning sensors that provide input to the 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.
What is this?
Table of contents Created and updated by William Orellana on Oct 26, 2024
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Code P15F7 GMC Description

The P15F7 code indicates a malfunction in the rear object detection control module, specifically related to the torque request signal message counter. This code is primarily associated with vehicles equipped with advanced driver-assistance systems (ADAS), which include features such as parking sensors and rear cross-traffic alerts. When the control module detects an inconsistency or an incorrect count in the torque request signal messages, it triggers this diagnostic trouble code (DTC).

OBDII Code P15F7 GMC - Rear Object Detection Control Module Torque Request Signal Message Counter Incorrect
P15F7 GMC Code - Rear Object Detection Control Module Torque Request Signal Message Counter Incorrect

Common Causes of P15F7 GMC

  1. Faulty rear object detection control module that may require replacement.
  2. Damaged wiring or connectors associated with the torque request signal.
  3. Malfunctioning sensors that provide input to the control module.
  4. Software glitches or outdated firmware in the control module.
  5. Environmental damage, such as corrosion or moisture intrusion affecting electrical connections.

Symptoms of P15F7 GMC

  1. Malfunctioning rear parking sensors, leading to false alerts or no alerts at all.
  2. Inconsistent performance of the vehicle's traction control system, particularly during low-speed maneuvers.
  3. Warning lights on the dashboard, such as the ABS or traction control indicators.
  4. Difficulty in engaging or disengaging the electronic stability control system.
  5. Unusual behavior in the vehicle's handling, especially when reversing or during low-speed turns.

How to Fix P15F7 GMC

  1. Diagnostic Scan: Begin with a thorough diagnostic scan using an OBD-II scanner to confirm the P15F7 code and check for any related codes that may provide additional context.
  2. Visual Inspection: Conduct a visual inspection of the wiring and connectors associated with the rear object detection system and the control module. Look for signs of damage, corrosion, or loose connections.
  3. Sensor Testing: Test the functionality of the rear object detection sensors to ensure they are operating correctly and providing accurate data to the control module.
  4. Control Module Reprogramming: If the control module is functioning but has outdated software, reprogram it with the latest firmware to resolve any potential software-related issues.
  5. Component Replacement: If any faulty components are identified, such as the control module or sensors, replace them with OEM or high-quality aftermarket parts.

Cost to Fix P15F7 GMC

The cost to repair a P15F7 code can vary widely based on several factors, including the specific diagnosis required, parts needed, and labor rates in your area. Generally, the total repair cost can range from $200 to $1,200. This estimate includes parts and labor, with parts typically costing between $100 and $800 depending on whether the control module or sensors need replacement. Labor costs can vary significantly; most auto repair shops charge between $80 and $150 per hour. In metropolitan areas or at dealerships, rates may be higher, while independent shops may offer lower rates. It is advisable to check local rates and obtain multiple quotes for a more precise estimate tailored to your specific vehicle and situation.

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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 P15F7 GMC Code

1. What are the common symptoms of OBDII code P15F7 GMC?

- Common symptoms include malfunctioning rear object detection system, warning lights on the dashboard, and issues with the torque request signal.

2. What does the OBDII code P15F7 GMC indicate?

- This code indicates that the Rear Object Detection Control Module has detected an incorrect torque request signal message counter.

3. What are the possible causes of OBDII code P15F7 GMC?

- Possible causes include faulty rear object detection control module, wiring issues, software glitches, or communication errors within the system.

4. How can I diagnose the issue related to code P15F7 GMC?

- Diagnose the issue by using a diagnostic scanner to retrieve the trouble codes, inspecting the wiring connections, and performing a thorough system check for any faults.

5. Can I still drive my vehicle with OBDII code P15F7 GMC present?

- It is generally not recommended to drive the vehicle with this code present as it can affect the rear object detection system's functionality and compromise safety.

6. How can I repair OBDII code P15F7 GMC?

- Repair options include fixing any wiring issues, replacing the rear object detection control module if necessary, updating software, and ensuring proper communication within the system.

7. Will resetting the trouble codes make OBDII code P15F7 GMC disappear?

- Resetting the trouble codes may temporarily clear the warning lights, but the underlying issue causing the code will persist until properly diagnosed and repaired.

8. Is it safe to continue using the rear object detection system with code P15F7 GMC triggered?

- It is not safe to rely on the rear object detection system while the code is present, as it may not function correctly and could lead to potential accidents or collisions.

9. How much does it typically cost to repair OBDII code P15F7 GMC?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay for diagnostic fees, parts replacement, and labor, which can range from a few hundred to over a thousand dollars.

10. Can a DIY enthusiast fix OBDII code P15F7 GMC at home?

- While some basic troubleshooting and repairs can be done at home, diagnosing and fixing issues related to this code may require specialized tools and expertise, so it is recommended to consult a professional mechanic for assistance.

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