Active Grille Air Shutter A Position Sensor Circuit High

Common symptoms

What you'll notice

• Check the wiring and connections of the active grille air shutter A position sensor circuit.
• Replace the active grille air shutter A position sensor if it is found to be faulty.
• Inspect the active grille air shutter for any obstructions or damage and clean or repair as necessary.
• Verify and update the software/firmware of the active grille air shutter control module.
• Replace the active grille air shutter control module if all other solutions do not resolve the issue.

Common causes

Most likely first

1. Faulty active grille air shutter position sensor
2. Wiring issues or loose connections in the active grille air shutter position sensor circuit
3. Malfunctioning active grille air shutter itself
4. Faulty control module for the active grille air shutter system
5. Incorrect programming or calibration of the active grille air shutter system

How to diagnose & fix

Work through it in order

1. Engine hesitation or stalling
2. Decreased fuel efficiency
3. Overheating of the engine
4. Malfunctioning cooling system
5. Illumination of the check engine light