AutoCodes – Chevrolet – P151E 2018 Chevrolet Silverado

P151E 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.

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Code Popularity 1,739

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 Jul 14, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P151E 2018 Chevrolet Silverado Description

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. If high levels of airflow are required, the active grille air shutter system will open one or both shutters. The control signal from the Engine Control Module (ECM), ignition, and ground circuits enable the active grille air shutter actuators to operate. If the conditions for opening the shutters are reached the ECM commands the active grille air shutter actuators to open one or both shutters.
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

OBDII Code P151E 2018 Chevrolet Silverado - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect - AutoCodes.com — P151E 2018 Chevrolet Silverado Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P151E 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 P151E 2018 Chevrolet Silverado code?

Need more information on how to fix the P151E 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P151E 2018 Chevrolet Silverado 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 P151E 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P151E in a 2018 Chevrolet Silverado related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

- Common symptoms may include poor engine performance, reduced fuel efficiency, and the activation of the Check Engine light.

2. What are the possible causes of OBDII code P151E in a 2018 Chevrolet Silverado?

- The code P151E can be triggered by issues such as a faulty Active Grille Air Shutter Actuator, damaged wiring or connectors, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code P151E in my 2018 Chevrolet Silverado?

- Diagnosis typically involves using a scan tool to retrieve the code, inspecting the actuator and related components for damage, and testing the electrical connections for proper voltage and continuity.

4. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P151E present?

- It is not recommended to drive the vehicle with the code present, as it can lead to further damage and potentially affect the vehicle's performance and fuel efficiency.

5. How can I reset OBDII code P151E in my 2018 Chevrolet Silverado?

- Clearing the code can be done using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, the underlying issue causing the code should still be addressed.

6. Is it possible to repair OBDII code P151E in a 2018 Chevrolet Silverado without professional help?

- While some DIY enthusiasts may attempt to address the issue themselves, it is recommended to seek professional assistance to properly diagnose and repair the root cause of the code.

7. Can a faulty Active Grille Air Shutter Actuator cause OBDII code P151E in a 2018 Chevrolet Silverado?

- Yes, a malfunctioning Active Grille Air Shutter Actuator is a common cause of the P151E code, as it directly affects the air flow and engine performance.

8. How much does it typically cost to repair OBDII code P151E in a 2018 Chevrolet Silverado?

- Repair costs can vary depending on the specific cause of the code, but it may involve replacing the actuator, repairing wiring, or addressing issues with the control module. Costs can range from a few hundred to over a thousand dollars.

9. Are there any preventive measures to avoid OBDII code P151E in a 2018 Chevrolet Silverado?

- Regular maintenance, such as checking and cleaning the Active Grille Air Shutter Actuator, inspecting wiring for damage, and keeping the vehicle's systems in good condition, can help prevent issues that lead to the P151E code.

10. How urgent is it to address OBDII code P151E in a 2018 Chevrolet Silverado?

- It is advisable to address the P151E code promptly to avoid potential engine performance issues, decreased fuel efficiency, and further damage to the vehicle's components.