AutoCodes – Chevrolet – P151E Chevrolet

P151E Chevrolet 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 Chevrolet 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 9,006

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P151E Chevrolet 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 Chevrolet - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect - AutoCodes.com — P151E Chevrolet Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P151E Chevrolet?

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 Chevrolet?

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 does this mean?

Code Tech Notes

The aero shutters on some 2019-2021 Silverado 1500, Tahoe, Suburban, Sierra 1500, Yukon, Escalade; 2020-2021 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models may have several conditions that could potentially cause improper shutter operation. Several DTCs may be set, depending on the specific conditions. When checking aero shutter operation, be sure to look for electrical integrity issues, displaced louvers/vanes, and debris that may block movement.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P151E Chevrolet 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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Information for Specific Chevrolet Models

P151E 2014 Chevrolet Silverado — Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
P151E 2015 Chevrolet Silverado — Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
P151E 2016 Chevrolet Silverado — Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
P151E 2017 Chevrolet Silverado — Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
P151E 2018 Chevrolet Silverado — Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

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 Chevrolet Code

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

- Common symptoms may include poor engine performance, decreased fuel efficiency, and the Check Engine light illuminating on the dashboard.

2. What can cause the OBDII code P151E in a Chevrolet indicating that the Active Grille Air Shutter Actuator 1 Signal Message Counter is Incorrect?

- The code P151E can be triggered by issues such as a faulty air shutter actuator, wiring problems, or a malfunctioning control module.

3. How can I diagnose the OBDII code P151E in a Chevrolet associated with the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

- Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, inspecting the condition of the actuator and related components, and checking for any damaged wiring.

4. What are some possible repair tips for addressing the OBDII code P151E in a Chevrolet linked to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

- Repair tips may include replacing the faulty air shutter actuator, repairing any damaged wiring, or reprogramming the control module to correct the signal message counter discrepancy.

5. Is it safe to continue driving with the OBDII code P151E in a Chevrolet indicating an issue with the Active Grille Air Shutter Actuator 1 Signal Message Counter?

- It is generally not recommended to drive with unresolved OBDII codes, as they can affect the vehicle's performance and fuel efficiency. It's best to address the issue promptly to prevent further damage.

6. Can resetting the OBDII code P151E in a Chevrolet related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect resolve the issue?

- While clearing the code may temporarily turn off the Check Engine light, it will not fix the underlying problem causing the code. Proper diagnosis and repair are necessary to address the issue effectively.

7. How much does it typically cost to repair the OBDII code P151E in a Chevrolet due to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve parts and labor expenses ranging from $200 to $500, possibly more if components need replacement.

8. Are there any recalls or technical service bulletins related to the OBDII code P151E in Chevrolet vehicles with Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

- It's recommended to check with a Chevrolet dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code and issue.

9. Can a DIY enthusiast with some automotive experience attempt to fix the OBDII code P151E in a Chevrolet caused by the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

- Depending on the individual's skill level, some DIY enthusiasts may be able to address this issue by following repair guides or tutorials. However, it's important to have the necessary tools and knowledge to ensure a proper repair.

10. How long does it typically take to repair the OBDII code P151E in a Chevrolet related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?

- The repair time can vary based on the extent of the issue and the repair process required. In general, it may take a few hours to a full day to diagnose and fix the problem related to this OBDII code.