Active Grille Air Shutter B Position Sensor Circuit High

Common symptoms

What you'll notice

• Inspect the wiring and connectors of the Active Grille Air Shutter B Position Sensor, ensuring they are properly connected and not damaged.
• Check the sensor itself for any signs of malfunction or damage, and replace if necessary.
• Clean the Active Grille Air Shutter B Position Sensor and surrounding components to remove any dirt or debris that may be causing the circuit to register as high.
• Reset the vehicle's computer system or update the software to ensure proper communication with the sensor and eliminate any potential software glitches.

Common causes

Most likely first

1. Faulty or malfunctioning active grille air shutter position sensor
2. Wiring issue or short circuit in the active grille air shutter position sensor circuit
3. Malfunctioning or failed active grille air shutter system
4. Faulty or damaged electrical connections related to the active grille air shutter system
5. Issues with the vehicle's engine control module (ECM) or related control systems

How to diagnose & fix

Work through it in order

1. Engine misfires or runs rough
2. Decreased fuel efficiency
3. Illuminated check engine light
4. Overheating of the engine
5. Engine stalls or dies while driving or idling