AutoCodes – Buick – P059F Buick

P059F Buick Code - Active Grille Air Shutter 1 Performance

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 Check for debris obstructing the Active Grille Air Shutter, Faulty Active Grille Air Shutter, Active Grille Air Shutter harness is open or shorted. 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: P059F Buick indicates Active Grille Air Shutter 1 Performance.
Common causes: Common causes include Check for debris obstructing the Active Grille Air Shutter, Faulty Active Grille Air Shutter, Active Grille Air Shutter harness is open or shorted.
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 8,777

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 27, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P059F Buick 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 the desired Active Grille Air Shutter Position achieved has exceeded the number of attempts.

OBDII Code P059F Buick - Active Grille Air Shutter 1 Performance - AutoCodes.com — P059F Buick Code - Active Grille Air Shutter 1 Performance

What does this mean?

What are the Possible Causes of the DTC P059F Buick?

Check for debris obstructing the Active Grille Air Shutter
Faulty Active Grille Air Shutter
Active Grille Air Shutter harness is open or shorted
Active Grille Air Shutter circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P059F 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 P059F 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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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 P059F Buick Code

1. What are the common symptoms of OBDII code P059F related to the Active Grille Air Shutter 1 Performance in a Buick?

The common symptoms include poor engine performance, reduced fuel efficiency, and the activation of the Check Engine Light.

2. What are the potential causes of OBDII code P059F in a Buick, indicating Active Grille Air Shutter 1 Performance issues?

Possible causes include a malfunctioning active grille air shutter actuator, wiring issues, or a faulty control module.

3. How can I diagnose the OBDII code P059F in my Buick related to Active Grille Air Shutter 1 Performance?

Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the active grille air shutter system for any visible damage, and testing the components for proper functionality.

4. What should I do if I encounter OBDII code P059F in my Buick due to Active Grille Air Shutter 1 Performance problems?

It is recommended to have a qualified mechanic inspect and repair the active grille air shutter system to address the underlying issue causing the code.

5. Can I continue driving my Buick with OBDII code P059F related to Active Grille Air Shutter 1 Performance?

While the vehicle may still be operable, it is advisable to address the issue promptly to prevent further damage to the engine and ensure optimal performance.

6. Are there any DIY repair tips for resolving OBDII code P059F in a Buick associated with Active Grille Air Shutter 1 Performance?

DIY repairs for this code may include checking and cleaning the electrical connections, ensuring proper actuator function, and inspecting for any visible damage to the components.

7. How much does it typically cost to repair OBDII code P059F in a Buick caused by Active Grille Air Shutter 1 Performance issues?

Repair costs can vary depending on the exact cause of the problem, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Is OBDII code P059F related to Active Grille Air Shutter 1 Performance a common issue in Buick vehicles?

While not as common as some other codes, issues with the active grille air shutter system can occur in Buick vehicles, leading to the triggering of code P059F.

9. Can extreme weather conditions affect the occurrence of OBDII code P059F in a Buick due to Active Grille Air Shutter 1 Performance problems?

Extreme weather conditions, such as freezing temperatures, can potentially impact the functionality of the active grille air shutter system and contribute to the triggering of this code.

10. How long does it typically take to repair OBDII code P059F in a Buick associated with Active Grille Air Shutter 1 Performance problems?

The repair time can vary based on the specific issue causing the code and the availability of replacement parts, but it may take a few hours to a full day for a mechanic to diagnose and fix the problem.