P059F 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.
Code P059F 2018 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 the desired Active Grille Air Shutter Position achieved has exceeded the number of attempts.
What are the Possible Causes of the DTC P059F 2018 Chevrolet Silverado?
- 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 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 P059F 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.
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Frequently Asked Questions about P059F 2018 Chevrolet Silverado Code
1. What does the OBDII code P059F mean on a 2018 Chevrolet Silverado?
P059F indicates a performance issue with the Active Grille Air Shutter 1 system, which helps regulate airflow to the engine for improved efficiency and temperature control.
2. What are the common symptoms of code P059F?
Symptoms may include an illuminated check engine light, reduced fuel efficiency, engine overheating, or issues with engine warm-up.
3. What causes the P059F code to appear?
Common causes include a malfunctioning active grille shutter motor, damaged wiring or connectors, debris obstructing the shutters, or a failing grille shutter assembly.
4. Can I drive my 2018 Chevrolet Silverado with the P059F code?
While the truck may still be drivable, ignoring the code can lead to suboptimal engine performance, reduced fuel economy, and potential overheating issues.
5. How do I diagnose the P059F code?
Diagnosis involves inspecting the grille shutter assembly, checking for debris or obstructions, testing the shutter motor, and verifying the integrity of wiring and connectors.
6. How do I fix the P059F code on a 2018 Silverado?
Repairs might include cleaning debris from the grille shutters, repairing or replacing damaged wiring, or replacing the active grille shutter motor or assembly.
7. How much does it cost to fix the P059F code?
Repair costs can range from $100 to $500, depending on whether the issue is a simple wiring repair or a full replacement of the active grille shutter assembly.
8. Can a dirty grille cause the P059F code?
Yes, debris or dirt obstructing the active grille shutters can cause them to malfunction, triggering the P059F code.
9. Does the active grille shutter affect fuel efficiency?
Yes, the active grille shutter system is designed to improve aerodynamics and fuel efficiency. A malfunction can reduce fuel economy.
10. Will clearing the P059F code solve the problem?
Clearing the code without addressing the underlying issue will only temporarily turn off the check engine light. The code will likely return until the problem is fixed.
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