Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part of the car that helps control air going into the engine is not working right. It's like a flap that should open and close, but it's stuck.
The active grille air shutter system is designed to improve aerodynamics and fuel efficiency by controlling airflow through the grille. If the shutter is stuck open, it can affect the vehicle's performance.
The P059F code is triggered when the Powertrain Control Module (PCM) detects that the active grille air shutter is not moving as expected. This could be due to a mechanical failure, electrical issue, or blockage preventing the shutter from closing.
• Check Engine Light (CEL) is on
• Reduced fuel efficiency
• Possible overheating in extreme conditions
• Faulty active grille air shutter actuator
• Obstruction in the grille shutter mechanism
• Wiring issues or poor electrical connection
PCM: Powertrain Control Module
Actuator: A device that causes a mechanical system to move
• Visually inspect the grille shutter for obstructions
• Check wiring and connectors for damage
• Test the actuator for proper operation
• Remove any obstructions in the grille shutter
• Repair or replace damaged wiring
• Replace the faulty grille shutter actuator
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Chevrolet Malibu
• Ford F-150
• GMC Sierra
• Regularly clean the grille area
• Inspect the shutter mechanism during routine maintenance
• Ensure no debris is blocking the shutter
Engine Performance
• Have the vehicle inspected by a professional if the Check Engine Light comes on
• Avoid driving in extreme conditions until the issue is resolved
Check with the vehicle manufacturer for warranty coverage on emission-related components.
This code has become more common with the introduction of active grille shutters in modern vehicles to improve fuel efficiency.
Moderate – While not immediately critical, it should be addressed to maintain optimal vehicle performance.
Driving with a malfunctioning grille shutter can lead to reduced fuel efficiency and potential engine overheating.
• Engine running
• Vehicle at operating temperature
The active grille air shutter is located at the front of the vehicle, behind the grille.
Q: Can I drive with a P059F code?
A: While you can drive with this code, it's best to have it fixed soon to avoid reduced fuel efficiency and potential engine issues.
Q: How do I reset the P059F code?
A: After repairing the issue, you can reset the code using an OBD-II scanner.
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