AutoCodes – RAM – U1119 RAM

U1119 RAM Code - Lost Front Control Module Message

Quick Answer

The Transmission Control Module (TCM) receives information from the Engine, Anti-lock Brake System, and the Electronic Gear Shift control modules over the Controlled Area Network (CAN) C bus. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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: U1119 RAM indicates Lost Front Control Module Message.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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 949

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 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1119 RAM Description

The Transmission Control Module (TCM) receives information from the Engine, Anti-lock Brake System, and the Electronic Gear Shift control modules over the Controlled Area Network (CAN) C bus. The CAN C bus is a high-speed communication bus that allows real-time control capability between various controllers. Most messages are sent every 20 mSec, this means critical information can be shared between multiple controllers almost instantaneously. The CAN C bus is a two-wire bus with a CAN (+) and a CAN (-) circuit. To reduce the potential of radio and other electrical noise interference, the CAN Bus circuit wiring is manufactured using a twisted pair configuration within the electrical wiring harness. The Diagnostic Trouble Code (DTC) will set if a valid CAN ID was not received in the required time from the Front Control Module (FCM).

OBDII Code U1119 RAM - Lost Front Control Module Message - AutoCodes.com — U1119 RAM Code - Lost Front Control Module Message

What does this mean?

What are the Possible Causes of the DTC U1119 RAM?

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

How to Fix the DTC U1119 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 U1119 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 U1119 RAM Code

1. What does the OBDII code U1119 mean on a RAM vehicle?

The U1119 code indicates a "Lost Front Control Module (FCM) Message," meaning the communication between the FCM and other modules has been interrupted.

2. What are the common symptoms of the U1119 code on a RAM?

Symptoms may include warning lights on the dashboard, erratic headlight or wiper operation, and non-functional auxiliary systems like turn signals or fog lights.

3. What causes the U1119 code to appear?

Common causes include a faulty Front Control Module (FCM), wiring issues like damaged or corroded connectors, or a malfunction in the CAN (Controller Area Network) bus system.

4. Can the U1119 code cause drivability issues?

Typically, U1119 does not affect drivability but may compromise the functionality of certain vehicle systems controlled by the FCM.

5. How can I diagnose the U1119 code?

Start by checking the FCM's wiring and connectors for damage or corrosion. Then use a scan tool to check for related codes and monitor the CAN bus communication.

6. Can a dead battery trigger the U1119 code?

Yes, a weak or dead battery can disrupt module communication and potentially trigger the U1119 code.

7. How do I fix the U1119 code on a RAM vehicle?

Repairs may include cleaning or repairing corroded connectors, replacing damaged wiring, or replacing the Front Control Module if it's found to be defective.

8. How much does it cost to fix the U1119 code?

Repair costs can range from $50â€“$150 for minor wiring repairs, while replacing the FCM may cost $300â€“$800, depending on parts and labor.

9. Can I drive my RAM with the U1119 code active?

While the vehicle may still be drivable, itâ€™s not recommended as certain systems like lights or wipers may not function correctly, potentially compromising safety.

10. Do I need to reprogram the Front Control Module after replacement?

Yes, in most cases, the new FCM will need to be programmed using specialized tools to ensure proper communication with the vehicleâ€™s systems.