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U1149 Chrysler Code - Lost Communication With Multi-Function Switch

Quick Answer

The U1149 Chrysler code indicates that there is a communication error between the vehicle's engine control module (ECM) and the multi-function switch. Common causes include Faulty wiring harness, Corrosion or damage to connectors, Malfunctioning multi-function switch. 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
U1149 Chrysler indicates Lost Communication With Multi-Function Switch.
Common causes
Common causes include Faulty wiring harness, Corrosion or damage to connectors, Malfunctioning multi-function switch.
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 Sep 08, 2024
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Code U1149 Chrysler Description

The U1149 Chrysler code indicates that there is a communication error between the vehicle's engine control module (ECM) and the multi-function switch. The multi-function switch is a critical component that controls various functions such as headlights, turn signals, windshield wipers, and cruise control. When the ECM is unable to communicate with the multi-function switch, it can lead to various issues with the vehicle's performance and safety features.

OBDII Code U1149 Chrysler - Lost Communication With Multi-Function Switch
U1149 Chrysler Code - Lost Communication With Multi-Function Switch

Common Causes of U1149 Chrysler

  1. Faulty wiring harness
  2. Corrosion or damage to connectors
  3. Malfunctioning multi-function switch
  4. ECM software issue
  5. Electrical system malfunction

Symptoms of U1149 Chrysler

  1. Non-functioning turn signals
  2. Headlights not working properly
  3. Malfunctioning windshield wipers
  4. Inoperative cruise control
  5. Limp mode activation

How to Fix U1149 Chrysler

  1. Perform a comprehensive diagnostic scan to identify the specific cause of the communication error.
  2. Inspect the wiring harness for any damage or corrosion, repair or replace as needed.
  3. Check the connectors for proper connectivity, clean or replace if necessary.
  4. Test the multi-function switch for proper functionality, replace if found to be faulty.
  5. Update the ECM software if required to ensure proper communication with the multi-function switch.

Cost to Fix U1149 Chrysler

The typical repair costs for resolving the U1149 Chrysler code can vary depending on the specific cause of the communication error. On average, the repair costs for this issue could range from $150 to $500, including parts and labor. However, it is essential to note that the actual cost may vary based on the location, vehicle make and model, and the complexity of the repair. Diagnostic time and labor rates at auto repair shops can also impact the overall cost, with rates typically ranging between $80 and $150 per hour. It is advisable to contact local repair shops for a more accurate cost estimate based on individual circumstances.

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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 U1149 Chrysler Code

1. What are the common symptoms of OBDII code U1149 Chrysler, "Lost Communication With Multi-Function Switch"?

- Common symptoms include non-functioning turn signals, malfunctioning windshield wipers, and issues with other multi-function switch-controlled functions.

2. What are the possible causes of the U1149 code in a Chrysler vehicle?

- The U1149 code can be triggered by a faulty multi-function switch, damaged wiring or connectors, a malfunctioning Body Control Module (BCM), or a communication network issue.

3. How can I diagnose the U1149 code related to lost communication with the multi-function switch in my Chrysler vehicle?

- Proper diagnosis involves using an OBDII scanner to retrieve the code, inspecting the multi-function switch for physical damage, checking the wiring and connectors for any issues, and testing the BCM for functionality.

4. Can I repair the U1149 code issue on my Chrysler at home?

- Depending on the cause of the code, some repairs may be possible at home, such as replacing the multi-function switch or repairing damaged wiring. However, complex issues with the BCM or communication network may require professional diagnosis and repair.

5. Will driving with the U1149 code present cause any harm to my Chrysler vehicle?

- While driving with the U1149 code may not immediately harm your vehicle, it is not recommended as it can lead to safety hazards due to non-functioning turn signals and other essential functions controlled by the multi-function switch.

6. How much does it typically cost to repair the U1149 code related to lost communication with the multi-function switch in a Chrysler vehicle?

- The cost of repairing the U1149 code can vary depending on the underlying cause. Simple repairs like replacing the multi-function switch may cost a few hundred dollars, while more complex issues involving the BCM or wiring can cost more.

7. Can resetting the OBDII code U1149 Chrysler temporarily fix the issue?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the multi-function switch or communication network is not addressed, the code is likely to reappear.

8. Is it safe to continue driving my Chrysler if the U1149 code has been triggered?

- It is not advisable to continue driving your Chrysler with the U1149 code present, as it can lead to safety risks due to the potential non-functioning of critical vehicle systems controlled by the multi-function switch.

9. How long does it typically take to repair the U1149 code on a Chrysler vehicle?

- The repair time for the U1149 code can vary depending on the diagnostic process and the complexity of the issue. Simple repairs may take a few hours, while more involved repairs may take longer.

10. Can I prevent the U1149 code from occurring in my Chrysler vehicle?

- Regular maintenance, such as checking and replacing the multi-function switch when needed, ensuring proper wiring connections, and addressing any electrical issues promptly, can help prevent the U1149 code from occurring.

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