Active Grille Air Shutter B Position Sensor Circuit Intermittent

Common symptoms

What you'll notice

• Inspect and clean the Active Grille Air Shutter B position sensor circuit to ensure proper connectivity.
• Check for any loose or damaged wiring related to the Active Grille Air Shutter B position sensor and repair or replace as necessary.
• Verify if the Active Grille Air Shutter B position sensor requires calibration or reprogramming, and perform the necessary steps to recalibrate it.
• Replace the Active Grille Air Shutter B position sensor if all other solutions have been exhausted and the issue persists.

Common causes

Most likely first

1. Faulty or damaged active grille air shutter B position sensor
2. Loose or corroded wiring connections related to the sensor circuit
3. Malfunctioning control module for the active grille air shutter
4. Restricted or blocked air flow through the grille
5. Incorrect calibration or alignment of the active grille air shutter mechanism

How to diagnose & fix

Work through it in order

1. Engine misfire or hesitation
2. Decreased fuel efficiency
3. Rough idling or stalling
4. Overheating of the engine
5. Activation of the check engine light