P151E 2015 GMC Sierra Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
Quick Answer
The active grille air shutter system closes shutters in the front grille to enhance vehicle aerodynamics in driving situations where cooling and A/C loads are relatively low and high levels of front-end airflow are not required. Common causes include Faulty Active Grille Air Shutter Actuator, Active Grille Air Shutter Actuator harness is open or shorted, Active Grille Air Shutter Actuator circuit poor electrical connection. 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, Active Grille Air Shutter Actuator harness is open or shorted, Active Grille Air Shutter Actuator circuit poor electrical connection.
- 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 P151E 2015 GMC Sierra Description
The dual active grille air shutter system consists of two aero shutter mechanisms located in the front grille for controlling the amount of air flowing through the grille. It includes three wires; ground, power, and a Local Interconnect Network (LIN) Bus serial data circuit from the ECM to the shutter actuator. The ECM determines shutter state based on various vehicle conditions such as vehicle speed, coolant temperature, fan state, refrigerant system pressure, A/C compressor state, and ambient temperature. The ECM has the ability to command each shutter individually to the open or closed positions through communications on the LIN Bus.
The actuators are powered by an ignition circuit that is active when the key is in the RUN position. The vehicle may have to be driven for up to 13 minutes at speeds greater than 41 km/h (25 mph) before a shutter begins to move. If low ambient temperature is detected, the shutters will remain in the closed position.
The Diagnostic Trouble Code (DTC) will be set if there a LIN Bus Communication Malfunction
What are the Possible Causes of the DTC P151E 2015 GMC Sierra?
- Faulty Active Grille Air Shutter Actuator
- Active Grille Air Shutter Actuator harness is open or shorted
- Active Grille Air Shutter Actuator circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P151E 2015 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 P151E 2015 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.
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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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