AutoCodes – GMC – P10C7 2017 GMC Sierra

P10C7 2017 GMC Sierra Code - Reductant Control System Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Reductant Control System. 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: P10C7 2017 GMC Sierra indicates Reductant Control System Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Reductant Control System.
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 178

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 26, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P10C7 2017 GMC Sierra Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Reductant Control System Signal Message Counter is Incorrect.

OBDII Code P10C7 2017 GMC Sierra - Reductant Control System Signal Message Counter Incorrect - AutoCodes.com — P10C7 2017 GMC Sierra Code - Reductant Control System Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P10C7 2017 GMC Sierra?

Faulty Reductant Control System

How to Fix the DTC P10C7 2017 GMC Sierra?

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 P10C7 2017 GMC Sierra 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 P10C7 2017 GMC Sierra code?

Need more information on how to fix the P10C7 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P10C7 2017 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 P10C7 2017 GMC Sierra Code

1. What does the OBDII code P10C7 mean on a 2017 GMC Sierra?

P10C7 indicates an issue with the Reductant Control System, where the signal message counter is incorrect, often related to communication errors between the engine control module (ECM) and the reductant control module.

2. What are the common symptoms of the P10C7 code?

Common symptoms include a Check Engine Light, possible DEF (Diesel Exhaust Fluid) system warnings, reduced engine power, or poor emissions performance.

3. What causes the P10C7 code to trigger?

This code can be caused by faulty wiring, damaged connectors, a malfunctioning reductant control module, or corrupted software in the ECM or reductant module.

4. Can I drive my 2017 GMC Sierra with the P10C7 code active?

It is not recommended to drive for an extended period with this code active, as it may lead to reduced engine performance or emissions system issues.

5. How do I diagnose the P10C7 code?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the wiring and connectors for damage, and verifying proper communication between the ECM and reductant control module.

6. How is the P10C7 code fixed?

Repairs may include repairing or replacing damaged wiring or connectors, reprogramming or replacing the reductant control module, or updating ECM software.

7. Does the P10C7 code indicate a serious issue?

While not immediately critical, it can lead to emissions system malfunctions or reduced engine performance if not addressed promptly.

8. What tools are needed to troubleshoot the P10C7 code?

You will need a diagnostic scanner, a multimeter for electrical testing, and potentially service manuals for your 2017 GMC Sierra.

9. Can a software update resolve the P10C7 code?

Yes, in some cases, a software update for the ECM or reductant control module can resolve the issue if it is related to communication errors.

10. What should I do if the P10C7 code keeps returning after repairs?

If the code persists, recheck the wiring, connectors, and modules for issues, and consider consulting a professional technician to ensure no underlying problems are missed.