Active Grille Air Shutter A Supply Voltage Circuit Low

Common symptoms

What you'll notice

• Check and replace any damaged wiring or connectors in the Active Grille Air Shutter circuit.
• Inspect and replace a faulty Active Grille Air Shutter relay, if necessary.
• Ensure that the Active Grille Air Shutter motor is functioning properly and replace it if needed.
• Verify and fix any issues with the control module related to the Active Grille Air Shutter circuit.
• In rare cases, consider replacing the entire Active Grille Air Shutter assembly if all other components are in working order.

Common causes

Most likely first

1. Faulty active grille air shutter motor
2. Short circuit or open circuit in the active grille air shutter wiring
3. Faulty active grille air shutter control module
4. Low voltage supply to the active grille air shutter system
5. Software issue in the active grille air shutter control unit

How to diagnose & fix

Work through it in order

1. Engine misfire or rough idle
2. Poor fuel efficiency
3. Engine stalling or intermittent loss of power
4. Check engine light illuminated
5. Overheating of the engine