Active Grille Air Shutter C Performance/Stuck Off

Common symptoms

What you'll notice

• Verify that the grille air shutter is not physically obstructed or stuck
• Inspect the wiring harness and connectors for any damage or loose connections
• Replace the grille air shutter assembly if all other steps do not resolve the issue

Common causes

Most likely first

1. Faulty or stuck active grille air shutter mechanism
2. Defective control module for the active grille air shutter
3. Wiring or electrical connection issues related to the active grille air shutter system
4. Blockage or obstruction in the active grille air shutter system
5. Malfunctioning sensor or sensor related to the active grille air shutter system

How to diagnose & fix

Work through it in order

1. Engine performance issues, such as reduced power or hesitation during acceleration.
2. Poor fuel efficiency, noticeably reduced gas mileage.
3. Check Engine Light (CEL) illuminated on the vehicle's dashboard.
4. Overheating of the engine, especially during extended idle or low
5. speed driving.
6. Unusual or excessive noise coming from the engine compartment, particularly near the front grille area.