Active Grille Air Shutter B Control Circuit/Open

Common symptoms

What you'll notice

• Check the wiring and connections to ensure they are secure and free from any damage or corrosion.
• Inspect the fuse related to the active grille air shutter B control circuit and replace if necessary.
• Test the grille air shutter actuator for proper functioning and replace if found faulty.
• Check the sensor responsible for controlling the active grille air shutter B circuit and replace if needed.
• In case all the above steps do not resolve the issue, consult the vehicle's service manual or contact the manufacturer for further assistance.

Common causes

Most likely first

1. Malfunctioning or faulty grille air shutter B control module
2. Loose or damaged wiring or connectors in the grille air shutter circuit
3. Sensor malfunction or failure in the grille air shutter system
4. Faulty or malfunctioning grille air shutter actuator
5. Incorrect or improper positioning of the grille air shutter

How to diagnose & fix

Work through it in order

1. Engine may overheat or run at higher than normal temperatures.
2. Poor fuel efficiency or reduced miles per gallon.
3. Trouble starting or difficulty in staying running.
4. Check engine light may illuminate on the dashboard.
5. Decreased performance or lack of power when accelerating.