U11E9 on Chrysler: How to Diagnose & Fix
Lost Communication With Active Grille Shutter Module
1 Chrysler model · 1 documented issue · $350-$700 repair
U11E9 on Chrysler by model: symptoms, diagnosis and fix
The active grille shutter (AGS) is a motorized vane assembly behind the lower grille that the PCM closes for warm-up and aerodynamics and opens for cooling airflow. On these minivans the integrated AGS actuator/module fails or drops off the vehicle network, setting U11E9 (PCM lost communication with the active grille shutter module) and illuminating the MIL. Chrysler issued dealer bulletin 9004138 (June 30, 2021) and revision 9004138A (July 21, 2021) covering AGS diagnosis and replacement with preliminary checks, and both are listed against the 2020 and 2021 Chrysler Voyager; a further bulletin, S2008000132 and its revisions, covers MIL illumination with AGS communication loss combined with ambient air temperature sensor codes. The vanes can also bind mechanically from road debris, ice, or a minor front-end impact. A shutter stuck closed restricts radiator airflow — most noticeable as weak A/C performance in traffic and rising coolant temperature when towing or idling in heat — while a shutter stuck open costs warm-up time and fuel economy. Diagnosis is muddied by the fact that the module, the wiring and the mechanical vanes all produce the same code, which is why the bulletin guidance exists to stop parts being replaced before the preliminary checks are done.
Common Symptoms
- Check engine light on with no drivability complaint
- A/C blows warm in stop-and-go traffic or at idle in hot weather
- Coolant temperature climbing when towing or idling
- Audible clicking or grinding from behind the lower grille on startup
- Reduced fuel economy and long warm-up time
How to Fix
Inspect vanes for debris/impact, test the connector and pigtail, and confirm current PCM software. Replace the complete shutter/motor assembly only after an internal AGS failure is established.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 68438679AD active grille shutter assembly$231
Includes the integrated actuator; verify VIN and front-fascia configuration.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (3)
U11E9 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U11E9 mean on a Chrysler?
U11E9 stands for "Lost Communication With Active Grille Shutter Module." U11E9 is a manufacturer-specific network communication code used mainly by Chrysler, Dodge, Jeep, and RAM vehicles. It means a control module (typically the PCM) has lost communication over the data bus with the active grille shutter system, which opens and closes vanes behind the grille to manage airflow for aerodynamics, fuel economy, and engine warm-up. The computer detected that expected messages from the shutter actuator are missing or corrupted. It usually only triggers a check engine light and a small efficiency/cooling impact rather than a driveability emergency. On Chrysler it is documented across 1 model: Voyager.
What are the most common causes of U11E9?
The most common causes of U11E9 are: Faulty active grille shutter actuator/motor, Damaged or corroded wiring or connector at the shutter module, Open or short in the data bus (CAN) circuit, Loss of power or ground to the shutter module, Debris, ice, or physical obstruction jamming the shutter, Software/PCM update needed. The specific cause varies by vehicle.
How much does it cost to fix U11E9 on a Chrysler?
Published repair estimates on Chrysler range from $350 to $700 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for U11E9 on a different make?
View U11E9 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.