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Engine-Codes – GMC – P151E 2015 GMC Sierra

P151E 2015 GMC Sierra Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

Quick Answer

The P151E code on a 2015 GMC Sierra indicates that there is an issue with the Active Grille Air Shutter Actuator 1 signal message counter being incorrect. Common causes include Faulty Active Grille Air Shutter Actuator 1, Wiring or connection issues, Software malfunction. 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
P151E 2015 GMC Sierra indicates Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Active Grille Air Shutter Actuator 1, Wiring or connection issues, Software malfunction.
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 Aug 19, 2024
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Code P151E 2015 GMC Sierra Description

The P151E code on a 2015 GMC Sierra indicates that there is an issue with the Active Grille Air Shutter Actuator 1 signal message counter being incorrect. This component is responsible for controlling the airflow through the grille to improve the vehicle's aerodynamics and fuel efficiency. When this signal message counter is incorrect, it can affect the actuator's operation, leading to potential performance issues and decreased efficiency.

OBDII Code P151E 2015 GMC Sierra - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
P151E 2015 GMC Sierra Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

Common Causes of P151E 2015 GMC Sierra

  1. Faulty Active Grille Air Shutter Actuator 1
  2. Wiring or connection issues
  3. Software malfunction
  4. Environmental factors (dirt, debris blocking the actuator)
  5. Electrical system issues

Symptoms of P151E 2015 GMC Sierra

  1. Check engine light illuminated
  2. Reduced fuel efficiency
  3. Engine running rough or stalling
  4. Abnormal noise coming from the grille area
  5. Vehicle overheating

How to Fix P151E 2015 GMC Sierra

  1. Begin by diagnosing the specific cause of the incorrect signal message counter, using a diagnostic scanner to retrieve fault codes and pinpoint the issue.
  2. Inspect the Active Grille Air Shutter Actuator 1 for any visible damage or signs of malfunction.
  3. Check the wiring and connections associated with the actuator for any loose connections or damage.
  4. If necessary, reprogram the actuator or update the software to correct the signal message counter.
  5. Clear the fault codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P151E 2015 GMC Sierra

The cost of repairing the Active Grille Air Shutter Actuator 1 signal message counter issue can vary depending on the extent of the problem and the specific repairs required. In general, the parts for this repair may range from $100 to $300, while labor costs could be around $100 to $200. Overall, the total repair cost could fall between $200 and $500. It is advisable to consult with a professional mechanic to get an accurate estimate based on your vehicle's specific needs and location.

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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 P151E 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P151E in a 2015 GMC Sierra related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

The common symptoms include the Check Engine Light coming on, decreased fuel efficiency, and potential issues with the vehicle's cooling system.

2. What could cause the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect trouble code in a 2015 GMC Sierra?

This code is often triggered by a faulty active grille air shutter actuator, damaged wiring or connectors, or issues with the actuator control module.

3. How can I diagnose the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect code in my 2015 GMC Sierra?

Diagnosis involves using an OBDII scanner to retrieve the specific code, inspecting the actuator and its wiring for damage, and testing the actuator's functionality.

4. Can I drive my 2015 GMC Sierra with the P151E code related to the Active Grille Air Shutter Actuator issue?

It is not recommended to drive your vehicle with this code present, as it can lead to reduced performance, decreased fuel efficiency, and potential damage to other components.

5. How can I repair the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect code in my 2015 GMC Sierra?

Repair options include replacing the faulty actuator, repairing damaged wiring or connectors, and resetting the trouble code with an OBDII scanner after the issue has been addressed.

6. Is it possible to reset the OBDII code P151E related to the Active Grille Air Shutter Actuator issue without fixing the underlying problem?

Resetting the code without addressing the root cause will only temporarily clear the Check Engine Light, and the issue will likely reoccur until the underlying problem is fixed.

7. Are there any preventive maintenance tips to avoid the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect trouble code in a 2015 GMC Sierra?

Regularly inspecting the active grille air shutter system, keeping the components clean and well-maintained, and addressing any issues promptly can help prevent this code from appearing.

8. How much does it typically cost to repair the P151E code related to the Active Grille Air Shutter Actuator issue in a 2015 GMC Sierra?

The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the actuator, repairing wiring, or addressing other related components, which can range from a few hundred to over a thousand dollars.

9. Can a DIY enthusiast with basic automotive knowledge fix the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect code in a 2015 GMC Sierra?

Depending on the exact cause of the code, some DIY enthusiasts may be able to tackle the repair by following repair guides and using the necessary tools. However, more complex issues may require professional assistance.

10. How urgent is it to address the OBDII code P151E related to the Active Grille Air Shutter Actuator issue in a 2015 GMC Sierra?

It is recommended to address this code promptly to prevent potential performance issues, decreased fuel efficiency, and further damage to the vehicle's components.

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