P151E 2017 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 2017 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.
Code P151E 2017 Chevrolet Silverado 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 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?
Need more information on how to fix the P151E 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P151E 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P151E 2017 Chevrolet Silverado Code
1. What does the OBDII code P151E mean on a 2017 Chevrolet Silverado?
P151E indicates an issue with the Active Grille Air Shutter Actuator 1, where the signal message counter is incorrect, suggesting a communication or functionality problem with the actuator.
2. What are the common symptoms of code P151E in a 2017 Chevrolet Silverado?
Symptoms may include a check engine light, reduced fuel efficiency, poor engine temperature regulation, or aerodynamic inefficiencies.
3. What causes the P151E code to appear?
Common causes include a faulty active grille air shutter actuator, damaged wiring or connectors, a software issue in the ECM, or physical obstruction of the grille shutters.
4. Can I drive my 2017 Silverado with the P151E code?
While the truck may still be drivable, ignoring the issue could lead to reduced fuel efficiency, potential overheating, or other long-term damage to the engine or cooling system.
5. How do I diagnose the P151E code?
Diagnosis involves inspecting the grille shutter actuator for damage, checking wiring and connectors for continuity, and using a scan tool to monitor the actuator's operation and communication with the ECM.
6. How do I fix the P151E code on my Chevrolet Silverado?
Repairs may include replacing a faulty grille shutter actuator, repairing wiring or connectors, clearing physical obstructions, or updating the ECM software if a bug is present.
7. What tools are needed to troubleshoot the P151E code?
You’ll need an OBDII scanner, a multimeter for checking electrical connections, and possibly basic hand tools to access and inspect the grille shutter system.
8. How much does it cost to repair the P151E code?
Costs vary but typically range from $150 to $500, depending on whether the issue is a simple wiring repair or a full actuator replacement.
9. Can a dirty grille cause the P151E code?
Yes, dirt, debris, or ice obstructing the grille shutters can cause the actuator to malfunction and trigger the code.
10. Will clearing the code with a scanner fix the P151E code?
Clearing the code without addressing the underlying issue will likely cause the code to reappear. Proper diagnosis and repair are necessary.
Discuss the causes and fixes for P151E 2017 Chevrolet Silverado OBDII Code
Code P151E 2017 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
