U0284 CADILLAC, GMC, BUICK, CHEVROLET: LOST COMMUNICATION WITH ACTIVE GRILLE AIR SHUTTER 1 MOTOR MODULE
U0284 FORD, NISSAN, LINCOLN, INFINITI, MERCURY: LOST COMMUNICATION WITH ACTIVE GRILLE AIR SHUTTER MODULE 'A'.
POST UPDATED IN June, 2023
U0284 CADILLAC, GMC, BUICK, CHEVROLET: LOST COMMUNICATION WITH ACTIVE GRILLE AIR SHUTTER 1 MOTOR MODULE
U0284 FORD, NISSAN, LINCOLN, INFINITI, MERCURY: LOST COMMUNICATION WITH ACTIVE GRILLE AIR SHUTTER MODULE 'A'.
The Active Grille Air Shutter Actuator works by closing the louvers in the front bumper to improve vehicle aerodynamics when driving. Especially, when driving in conditions where cooling and air conditioning loads are relatively low and high levels of frontal airflow are not required. If it is necessary to increase airflow levels, the actuator opens the louvers.
The control signal from the Chassis Control Module, ignition, and ground circuits allow the operation of the active louver air shutter actuator. The Chassis Control Module commands the actuator to open if it is the case that the conditions to open the louvers are achieved.
When the diagnostic code U0284 OBDII is stored, it is to signal that a loss of communication with the Active Shutter Motor Module has occurred.
The U0284 OBD2 fault code is set due to the following reasons:
To solve the DTC U0284 OBDII code, consider the following suggestions: