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U1119 Chrysler Code - Lost Front Control Module Message

Quick Answer

The U1119 diagnostic trouble code (DTC) is specific to Chrysler vehicles and indicates a communication issue between the vehicle's control modules, particularly the front control module (FCM). Common causes include Damaged or corroded wiring harnesses connecting the ECM and FCM, Faulty front control module (FCM) that may require replacement, Poor electrical connections or loose connectors between modules. 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 Chrysler indicates Lost Front Control Module Message.
Common causes
Common causes include Damaged or corroded wiring harnesses connecting the ECM and FCM, Faulty front control module (FCM) that may require replacement, Poor electrical connections or loose connectors between modules.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 01, 2024
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Code U1119 Chrysler Description

The U1119 diagnostic trouble code (DTC) is specific to Chrysler vehicles and indicates a communication issue between the vehicle's control modules, particularly the front control module (FCM). This code is triggered when the Engine Control Module (ECM) fails to receive a message from the FCM, which is responsible for managing various functions such as lighting, power distribution, and other electronic systems in the vehicle.

OBDII Code U1119 Chrysler - Lost Front Control Module Message
U1119 Chrysler Code - Lost Front Control Module Message

Common Causes of U1119 Chrysler

  1. Damaged or corroded wiring harnesses connecting the ECM and FCM.
  2. Faulty front control module (FCM) that may require replacement.
  3. Poor electrical connections or loose connectors between modules.
  4. Software issues or bugs in the vehicle's programming that may need updates.
  5. Environmental damage, such as water intrusion affecting module functionality.

Symptoms of U1119 Chrysler

  1. Malfunctioning headlights or taillights (flickering, not turning on/off).
  2. Inconsistent operation of turn signals.
  3. Dashboard warning lights related to lighting or electrical systems.
  4. Reduced functionality of other electronic features (e.g., power windows, locks).
  5. Difficulty starting the vehicle or intermittent starting issues.

How to Fix U1119 Chrysler

  1. Diagnostic Scan: Start by using an OBD-II scanner to confirm the U1119 code and check for any additional codes that may provide more context.
  2. Visual Inspection: Conduct a thorough visual inspection of the wiring harness and connectors associated with the FCM and ECM for signs of damage, corrosion, or loose connections.
  3. Test the FCM: Use a multimeter to check the voltage and ground at the FCM. If readings are outside the normal range, the module may be faulty.
  4. Repair or Replace Components: Repair any damaged wiring or connectors. If the FCM is determined to be faulty, replace it with a new or refurbished unit.
  5. Reprogramming and Testing: After repairs, reprogram the new FCM if necessary, and perform a test drive to ensure that the communication is restored and that all systems are functioning correctly.

Cost to Fix U1119 Chrysler

** The cost of repairing a U1119 code can vary widely based on the specific diagnosis, parts needed, and labor involved. On average, the total repair costs can range from $150 to $600. This estimate includes parts such as a new front control module (which can cost between $100 and $400) and labor costs, which typically range from $80 to $150 per hour. The total labor time may vary from 1 to 3 hours depending on the complexity of the issue and the shop's diagnostic process. It's important to note that labor rates can differ significantly based on location, vehicle make and model, and engine type. In metropolitan areas or at dealerships, rates may be higher, while independent shops often charge less. Therefore, it's advisable to check local rates for a more precise estimate before proceeding with repairs.

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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 Chrysler Code

1. What are the common symptoms of OBDII code U1119 in a Chrysler vehicle?

The common symptoms include loss of communication with the front control module, malfunctioning instrument cluster, non-functional power windows, and issues with the vehicle's lighting system.

2. What could be the possible causes of the U1119 code in a Chrysler vehicle?

The U1119 code is typically triggered by a faulty front control module, wiring issues, poor electrical connections, or a software malfunction within the vehicle's control systems.

3. How can I diagnose the U1119 code in my Chrysler vehicle?

Diagnosing the U1119 code involves using an OBDII scanner to retrieve the code, checking the wiring and connections related to the front control module, and performing a detailed inspection of the control module itself for any signs of damage or malfunction.

4. Can I repair the U1119 code in my Chrysler vehicle myself?

While some DIY enthusiasts may attempt to address the U1119 code by checking and cleaning the connections and wiring, it is recommended to consult a professional mechanic or dealership for a thorough diagnosis and repair to ensure proper resolution.

5. Is it safe to drive my Chrysler vehicle with the U1119 code present?

It is not recommended to drive your vehicle with the U1119 code active, as it may lead to safety issues due to potential malfunctions in critical systems controlled by the front module.

6. How much does it typically cost to repair the U1119 code in a Chrysler vehicle?

The cost of repairing the U1119 code can vary depending on the extent of the issue, the need for replacement parts, and labor charges. It is advisable to obtain estimates from reputable mechanics or dealerships.

7. Can a software update fix the U1119 code in my Chrysler vehicle?

In some cases, a software update provided by Chrysler may resolve the U1119 code if it is determined to be a software-related issue causing the communication error with the front control module.

8. Will resetting the fault codes make the U1119 code disappear in my Chrysler vehicle?

Resetting the fault codes may temporarily clear the U1119 code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the system detects the problem again.

9. How long does it take to repair the U1119 code in a Chrysler vehicle?

The repair time for the U1119 code can vary depending on the complexity of the issue and availability of parts. It is best to consult with a professional technician for an accurate estimate of the repair duration.

10. Can the U1119 code reoccur in my Chrysler vehicle after it has been repaired?

If the root cause of the U1119 code was not properly addressed during the repair, there is a possibility that the code may reappear. It is crucial to ensure that the diagnosis and repair are done correctly to prevent recurrence.

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