P151E Buick 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 Buick 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 Buick 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 Buick?
- 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 Buick?
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 Buick 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 Buick Code
What are the common symptoms of OBDII code P151E in a Buick related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
Common symptoms include poor engine performance, reduced fuel efficiency, and the Check Engine light illuminating on the dashboard.
What are the possible causes of OBDII code P151E in a Buick related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
Possible causes include a faulty air shutter actuator, wiring issues, software glitches, or a malfunctioning control module.
How can I diagnose OBDII code P151E in a Buick related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the air shutter actuator and related wiring for damage, and checking for any software updates from the manufacturer.
What are some repair tips for addressing OBDII code P151E in a Buick related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
Repair tips may include cleaning or replacing the air shutter actuator, repairing any damaged wiring, resetting the control module, and performing a software update if available.
Can I continue driving my Buick with OBDII code P151E related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
It is not recommended to drive your vehicle with this code present, as it can lead to further engine issues and potentially worsen fuel efficiency.
How much does it typically cost to repair OBDII code P151E in a Buick related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
Are there any preventative measures to avoid OBDII code P151E in a Buick related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
Regular maintenance checks, such as inspecting the air shutter actuator and wiring during routine services, can help prevent issues that may trigger this fault code.
How urgent is it to address OBDII code P151E in a Buick related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
While your vehicle may still be operable with this code present, it is important to address it promptly to prevent potential damage to other components and ensure optimal engine performance.
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