AutoCodes – Generic – U1119

U1119 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 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 10,546
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 22, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code U1119 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 - Lost Front Control Module Message - AutoCodes.com
U1119 Code - Lost Front Control Module Message

What are the Possible Causes of the DTC U1119?

  • 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?

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 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 U1119 code?

Need more information on how to fix the U1119 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1119 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 Code

1. What does the OBDII code U1119 mean?

The U1119 code indicates a "Lost Front Control Module Message," meaning the vehicle's communication network has failed to receive data from the Front Control Module (FCM).

2. What are the symptoms of the U1119 code?

Symptoms may include warning lights on the dashboard, malfunctioning electrical components (e.g., headlights or wipers), and intermittent vehicle performance issues.

3. What causes the U1119 code to appear?

Common causes include faulty wiring or connectors, a failing Front Control Module, a malfunctioning CAN bus network, or software glitches in the vehicle's control systems.

4. Is it safe to drive with the U1119 code?

Driving with this code may be unsafe, as it could lead to malfunctioning critical systems like lights or wipers. Have the issue diagnosed and repaired as soon as possible.

5. How is the U1119 code diagnosed?

A technician will use a scan tool to check for related codes, inspect wiring and connectors for damage, and test the Front Control Module's functionality.

6. How can I fix the U1119 code?

Repairs may involve fixing damaged wiring, replacing the Front Control Module, or updating the vehicle's software if a programming issue is detected.

7. Can a weak battery cause the U1119 code?

Yes, a weak or failing battery may cause communication errors in the network, potentially triggering the U1119 code.

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

Repair costs vary but may range from $150 to $800 depending on whether wiring repairs, module replacement, or reprogramming is required.

9. Can I clear the U1119 code without fixing it?

Clearing the code without addressing the root cause is not recommended, as the issue will likely recur and may lead to further problems.

10. What tools are needed to troubleshoot the U1119 code?

A diagnostic scan tool, multimeter, and wiring diagram for the vehicle are essential for diagnosing and troubleshooting this code.

Discuss the causes and fixes for U1119 OBDII Code

Code U1119 comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play