AutoCodes – Jeep – U11C2 Jeep

U11C2 Jeep Code - Lost Tranmission Message

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) has not received a Bus message from the Transmission Control Module (TCM) for approximately 500ms. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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: U11C2 Jeep indicates Lost Tranmission Message.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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.

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Code Popularity 15,653

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 Apr 28, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U11C2 Jeep Description

The Diagnostic Trouble Code (DTC) sets when the Powertrain Control Module (PCM) has not received a Bus message from the Transmission Control Module (TCM) for approximately 500ms.

OBDII Code U11C2 Jeep - Lost Tranmission Message - AutoCodes.com — U11C2 Jeep Code - Lost Tranmission Message

What does this mean?

What are the Possible Causes of the DTC U11C2 Jeep?

Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U11C2 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 U11C2 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 U11C2 Jeep code?

Need more information on how to fix the U11C2 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U11C2 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 U11C2 Jeep Code

1. What are the common symptoms of the U11C2 OBDII code in a Jeep related to the "Lost Transmission Message"?

- Common symptoms include the transmission warning light illuminating on the dashboard, difficulty shifting gears, and potential loss of power.

2. What are some possible causes of the U11C2 code in a Jeep?

- Possible causes of the U11C2 code include faulty transmission control module (TCM), wiring issues, or a communication error between the TCM and other control modules.

3. How can I diagnose the U11C2 code in my Jeep?

- Diagnosing the U11C2 code typically involves using a professional OBDII scanner to read the code and check for any related transmission issues or communication errors within the vehicle's systems.

4. Can I continue driving my Jeep with the U11C2 code present?

- It is not recommended to continue driving your Jeep with the U11C2 code present, as it may lead to further transmission problems and potential safety issues on the road.

5. What are some DIY repair tips for the U11C2 code in a Jeep?

- DIY repair tips for the U11C2 code may include checking and cleaning the transmission connectors, inspecting the wiring for any damage, and resetting the TCM to see if the code clears.

6. Is it necessary to visit a mechanic for the U11C2 code in a Jeep?

- Due to the complexity of transmission systems, it is advisable to visit a qualified mechanic or dealership to diagnose and repair the U11C2 code to ensure proper troubleshooting and resolution.

7. How much does it typically cost to fix the U11C2 code in a Jeep?

- The cost of fixing the U11C2 code in a Jeep can vary depending on the specific underlying issue, but it may involve expenses for parts replacement, labor costs, and diagnostic fees.

8. Are there any recalls or technical service bulletins related to the U11C2 code in Jeeps?

- It is recommended to check with your local dealership or manufacturer for any recalls or technical service bulletins related to the U11C2 code in your specific Jeep model year.

9. Can a dead battery cause the U11C2 code to appear in a Jeep?

- A dead or weak battery can potentially cause communication errors between the various control modules in the vehicle, leading to the U11C2 code related to the transmission message being lost.

10. How long does it usually take to resolve the U11C2 code issue in a Jeep?

- The time taken to resolve the U11C2 code issue in a Jeep can vary depending on the exact cause and complexity of the repair needed, but it may range from a few hours to a day or more.