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P10C6 2016 GMC Sierra Code - Engine Diagnostic Status Signal Message Counter Incorrect

Quick Answer

The P10C6 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the Engine Diagnostic Status Signal Message Counter is incorrect. Common causes include Faulty engine control module (ECM), Loose or corroded electrical connections, Sensor malfunction or failure. 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
P10C6 2016 GMC Sierra indicates Engine Diagnostic Status Signal Message Counter Incorrect.
Common causes
Common causes include Faulty engine control module (ECM), Loose or corroded electrical connections, Sensor malfunction or failure.
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 11, 2024
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Code P10C6 2016 GMC Sierra Description

The P10C6 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the Engine Diagnostic Status Signal Message Counter is incorrect. This code is related to the communication between the engine control module (ECM) and other onboard systems within the vehicle. The ECM continuously monitors various parameters and statuses of the engine to ensure optimal performance and efficiency. When the message counter is incorrect, it means that the ECM is not receiving the expected number of signals or messages from the different sensors and components in the vehicle.

OBDII Code P10C6 2016 GMC Sierra - Engine Diagnostic Status Signal Message Counter Incorrect
P10C6 2016 GMC Sierra Code - Engine Diagnostic Status Signal Message Counter Incorrect

Common Causes of P10C6 2016 GMC Sierra

  1. Faulty engine control module (ECM)
  2. Loose or corroded electrical connections
  3. Sensor malfunction or failure
  4. Wiring issues or shorts in the electrical system
  5. Software or programming issues with the ECM

Symptoms of P10C6 2016 GMC Sierra

  1. Check engine light illuminated on the dashboard
  2. Engine running rough or misfiring
  3. Decrease in fuel efficiency
  4. Engine stalling or difficulty starting
  5. Loss of power or acceleration

How to Fix P10C6 2016 GMC Sierra

  1. Begin by using an OBD-II scanner to read and record the trouble codes stored in the vehicle's ECM.
  2. Inspect all electrical connections and wiring related to the engine control module and sensors. Repair any loose or corroded connections.
  3. Test each sensor individually to ensure they are functioning correctly. Replace any sensors that are found to be faulty.
  4. If no issues are found with the connections or sensors, consider reprogramming or replacing the engine control module.
  5. Clear the trouble codes from the ECM's memory and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P10C6 2016 GMC Sierra

The cost of repairing a P10C6 DTC on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the parts and labor required for this repair could range from $200 to $600. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary significantly. It's recommended to contact local shops for more accurate pricing based on your location, vehicle make and model, and engine type.

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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 P10C6 2016 GMC Sierra Code

1. What does the OBDII code P10C6 mean for a 2016 GMC Sierra?

P10C6 indicates an issue with the Engine Diagnostic Status Signal Message Counter being incorrect, which means the engine control module (ECM) is detecting a mismatch or error in diagnostic signal communication.

2. What are common symptoms of the P10C6 code on a 2016 GMC Sierra?

Symptoms may include an illuminated check engine light, reduced engine performance, erratic idling, or communication issues between the ECM and other modules.

3. What causes the P10C6 code to appear on a 2016 GMC Sierra?

Common causes include a malfunctioning ECM, damaged wiring or connectors in the communication circuit, or corrupted software within the ECM.

4. Can the P10C6 code cause drivability issues in a 2016 GMC Sierra?

Yes, it can cause drivability issues such as reduced power, rough idling, or hesitation, depending on the severity of the communication error.

5. How can I diagnose the P10C6 code on my 2016 GMC Sierra?

Use an advanced OBDII scanner to check for related codes, inspect the wiring and connectors for damage, and verify the integrity of the communication signals between modules.

6. Is the P10C6 code serious for a 2016 GMC Sierra?

While it may not cause immediate engine failure, the code can lead to reduced performance and should be addressed promptly to prevent further issues.

7. What repairs are commonly needed to fix the P10C6 code on a 2016 GMC Sierra?

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

8. Can clearing the P10C6 code fix the issue on a 2016 GMC Sierra?

Clearing the code may temporarily turn off the check engine light, but if the root cause isn’t addressed, the code is likely to return.

9. How much does it cost to fix the P10C6 code on a 2016 GMC Sierra?

Repair costs vary but may range from $150 for reprogramming to over $1,000 if a new ECM is needed, depending on labor rates and parts pricing.

10. Can I continue driving my 2016 GMC Sierra with the P10C6 code?

It’s possible to drive short distances, but prolonged driving with this code may lead to further engine or communication issues. It’s best to get it diagnosed and repaired as soon as possible.

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