AutoCodes – Dodge – U11C2 Dodge

U11C2 Dodge 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 Dodge 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 11,643

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

What does this mean?

What are the Possible Causes of the DTC U11C2 Dodge?

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 Dodge?

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 Dodge 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 Dodge Code

1. What does the OBDII code U11C2 mean on a Dodge vehicle?

U11C2 indicates a "Lost Transmission Message," meaning the Powertrain Control Module (PCM) has lost communication with the Transmission Control Module (TCM).

2. What are the common symptoms of the U11C2 code?

Common symptoms include erratic shifting, transmission stuck in limp mode, warning lights on the dashboard, or a complete loss of transmission functionality.

3. What causes the U11C2 code to appear?

The most common causes include wiring issues, damaged connectors, a faulty Transmission Control Module (TCM), or a failing Powertrain Control Module (PCM).

4. Can a low battery cause the U11C2 code?

Yes, low voltage or a weak battery can disrupt communication between the PCM and TCM, triggering the U11C2 code.

5. How do you diagnose the U11C2 code?

Diagnosis involves checking the wiring and connectors between the PCM and TCM, verifying battery voltage, and using a scan tool to monitor module communication.

6. Can driving with the U11C2 code damage the transmission?

Driving with this code may cause the transmission to operate in limp mode, which could lead to further issues if ignored for an extended period.

7. How can the U11C2 code be fixed?

Repairs may include fixing damaged wiring, cleaning or replacing corroded connectors, reprogramming the TCM or PCM, or replacing a faulty module.

8. Is the U11C2 code specific to Dodge vehicles?

While U11C2 is a generic communication error code, its description and troubleshooting steps can vary slightly across different manufacturers. This code is commonly seen on Dodge vehicles.

9. Do you need a professional to fix the U11C2 code?

While some basic checks like inspecting wiring can be done by a DIYer, professional diagnosis and repair are often recommended for module or communication-related issues.

10. Can the U11C2 code be resolved by resetting the system?

In some cases, clearing the code with a scan tool may temporarily resolve the issue, but if the underlying problem isnâ€™t fixed, the code will likely return.