Active Grille Air Shutter B Control Circuit Low

Common symptoms

What you'll notice

• Check for any loose or damaged wiring connections related to the active grille air shutter circuit.
• Inspect the grille air shutter actuator for any signs of damage or malfunction.
• Verify the operation of the active grille air shutter control module and replace if necessary.
• Ensure that there are no obstructions or debris blocking the movement of the active grille air shutter.
• Consider resetting the vehicle's on
• board computer system to clear any temporary faults related to the active grille air shutter circuit.

Common causes

Most likely first

1. Faulty active grille air shutter motor
2. Malfunctioning active grille air shutter control module
3. Loose or damaged wiring or connectors in the active grille air shutter circuit
4. Blockage or obstruction in the active grille air shutter mechanism
5. Defective temperature sensor used by the active grille air shutter system

How to diagnose & fix

Work through it in order

1. Engine overheating
2. Decreased fuel efficiency
3. Poor engine performance
4. Check engine light illuminated
5. Rough idling