AutoCodes – Jeep – U11E9 Jeep

U11E9 Jeep Code - Lost Communication With Active Grill Shutter

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) does not receive a valid Local Interconnect Network (LIN) BUS message from the Active Grill Shutter (AGS) Assembly for 2.6 seconds. Common causes include Faulty Active Grill Shutter (AGS) Assembly, Active Grill Shutter Assembly harness is open or shorted, Active Grill Shutter Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U11E9 Jeep indicates Lost Communication With Active Grill Shutter.
Common causes: Common causes include Faulty Active Grill Shutter (AGS) Assembly, Active Grill Shutter Assembly harness is open or shorted, Active Grill Shutter Assembly circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 26,471

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U11E9 Jeep Description

OBDII Code U11E9 Jeep - Lost Communication With Active Grill Shutter - AutoCodes.com — U11E9 Jeep Code - Lost Communication With Active Grill Shutter

What does this mean?

What are the Possible Causes of the DTC U11E9 Jeep?

Faulty Active Grill Shutter (AGS) Assembly
Active Grill Shutter Assembly harness is open or shorted
Active Grill Shutter Assembly circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U11E9 Jeep?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U11E9 Jeep code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U11E9 Jeep code?

Need more information on how to fix the U11E9 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U11E9 Jeep code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U11E9 Jeep Code

1. What does the OBDII code U11E9 for Jeep mean?

The U11E9 code indicates a communication problem between the vehicle's onboard computer and the active grill shutter system.

2. What are the common symptoms of U11E9 code in a Jeep?

Common symptoms include the active grill shutters being stuck in one position, poor engine performance, decreased fuel efficiency, and potentially triggering the check engine light.

3. What are the possible causes of the U11E9 code in a Jeep?

Potential causes of this code include damaged wiring or connectors, faulty active grill shutter motor, a malfunctioning control module, or a communication network issue within the vehicle.

4. How can I diagnose the U11E9 code in my Jeep?

Diagnosing the U11E9 code may involve visually inspecting the wiring and connectors, testing the active grill shutter motor, checking the control module for faults, and using a scan tool to analyze communication signals.

5. Can I continue driving my Jeep with the U11E9 code present?

It is not recommended to continue driving your Jeep with the U11E9 code active, as it may lead to further damage to the active grill shutter system and affect overall vehicle performance.

6. How can I repair the U11E9 code in my Jeep?

Repairing the U11E9 code may involve repairing or replacing damaged wiring, connectors, or components related to the active grill shutter system, resetting the control module, and clearing the fault code.

7. Is it possible to reset the U11E9 code in a Jeep without repairs?

While you can clear the U11E9 code with a scan tool, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

8. Can extreme weather conditions cause the U11E9 code in a Jeep?

Yes, extreme weather conditions such as heavy snow, ice, or debris buildup around the active grill shutters can potentially trigger the U11E9 code due to interference with the system's operation.

9. Are there any maintenance tips to prevent the U11E9 code in a Jeep?

Regularly inspecting and cleaning the active grill shutter system, ensuring proper wiring connections, and addressing any issues promptly can help prevent the U11E9 code from occurring.

10. Should I seek professional help for the U11E9 code in my Jeep?

If you are unsure about diagnosing or repairing the U11E9 code yourself, it is recommended to seek assistance from a qualified mechanic or dealership with experience in diagnosing Jeep's active grill shutter system.