AutoCodes – RAM – U11C2 RAM

U11C2 RAM 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 RAM 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 5,355

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 RAM 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 RAM - Lost Tranmission Message - AutoCodes.com — U11C2 RAM Code - Lost Tranmission Message

What does this mean?

What are the Possible Causes of the DTC U11C2 RAM?

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 RAM?

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 RAM 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.

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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 RAM Code

1. What are the common symptoms of the OBDII code U11C2 RAM titled Lost Transmission Message?

The common symptoms include the transmission not shifting properly, the vehicle going into limp mode, and the dashboard displaying a transmission-related warning light.

2. What are the possible causes of the U11C2 RAM code?

Possible causes include a faulty transmission control module (TCM), issues with the wiring or connectors related to the transmission system, or software glitches in the vehicle's computer system.

3. How can I diagnose the U11C2 RAM code?

Diagnosing this code typically involves using a professional OBDII scanner to retrieve the code and then conducting a thorough inspection of the transmission system, TCM, wiring, and connectors for any signs of damage or malfunction.

4. Can I still drive my vehicle with the U11C2 RAM code present?

It is not recommended to drive the vehicle with the U11C2 RAM code present, as it can lead to further damage to the transmission system and potentially compromise the safety of the vehicle.

5. How can I repair the U11C2 RAM code?

Repairing this code may involve replacing the faulty TCM, repairing or replacing damaged wiring or connectors, and performing a software update or reprogramming of the vehicle's computer system.

6. Are there any DIY tips for fixing the U11C2 RAM code?

While some basic troubleshooting steps can be taken, such as checking for loose or damaged wiring connections, it is recommended to seek assistance from a professional mechanic or dealership for proper diagnosis and repair of this code.

7. How much does it typically cost to repair the U11C2 RAM code?

The cost of repairing the U11C2 RAM code can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can the U11C2 RAM code be intermittent?

Yes, the U11C2 RAM code can be intermittent, meaning it may come and go depending on the driving conditions or the severity of the underlying issue. It is still important to address this code promptly to prevent further problems.

9. Will resetting the trouble codes make the U11C2 RAM code go away?

Resetting the trouble codes may temporarily clear the U11C2 RAM code, but if the underlying issue is not addressed, the code is likely to reappear once the problem resurfaces during driving.

10. Is the U11C2 RAM code specific to certain vehicle makes and models?

The U11C2 RAM code is not specific to any particular vehicle make or model, as it is a standard OBDII diagnostic trouble code related to a lost transmission message in the vehicle's computer system.