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U1149 Dodge Code - Lost Communication With Multi-Function Switch

Quick Answer

The U1149 diagnostic trouble code (DTC) for Dodge vehicles indicates that there has been a loss of communication with the multi-function switch. Common causes include Faulty multi-function switch, Wiring issues or loose connections, CAN bus communication error. 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 Dodge indicates Lost Communication With Multi-Function Switch.
Common causes
Common causes include Faulty multi-function switch, Wiring issues or loose connections, CAN bus communication error.
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 10, 2024
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Code U1149 Dodge Description

The U1149 diagnostic trouble code (DTC) for Dodge vehicles indicates that there has been a loss of communication with the multi-function switch. The multi-function switch, also known as the combination switch or turn signal switch, is a critical component that controls various functions in the vehicle, such as the turn signals, headlights, windshield wipers, and sometimes cruise control. When communication with this switch is lost, it can lead to a range of issues affecting the vehicle's performance and safety.

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

Common Causes of U1149 Dodge

  1. Faulty multi-function switch
  2. Wiring issues or loose connections
  3. CAN bus communication error
  4. Malfunctioning onboard computer system
  5. Water or moisture damage affecting the switch

Symptoms of U1149 Dodge

  1. Inoperative turn signals or erratic operation
  2. Headlights not working or flickering
  3. Windshield wipers not functioning
  4. Cruise control not engaging or working inconsistently

How to Fix U1149 Dodge

  1. Diagnose the issue by using a diagnostic scanner to retrieve the trouble codes and test the communication with the multi-function switch.
  2. Inspect the wiring harness and connections for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the multi-function switch for proper operation and replace it if faulty.
  4. Check the CAN bus communication and repair any faults in the system.
  5. Clear the trouble codes and perform a final test to ensure the issue is resolved.

Cost to Fix U1149 Dodge

The typical repair costs for addressing the U1149 code can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty multi-function switch can range from $150 to $300, including parts and labor. However, additional costs may apply if there are wiring or CAN bus issues that need to be addressed. It is advisable to consult with a professional mechanic or auto repair shop for an accurate estimate based on the specific circumstances of the vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and other factors.

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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 Dodge Code

1. What is OBDII code U1149 for Dodge indicating "Lost Communication With Multi-Function Switch"?

When your Dodge vehicle displays code U1149, it means there is a communication issue between the vehicle's onboard computer and the multi-function switch.

2. What are the common symptoms of OBDII code U1149 in Dodge vehicles?

Common symptoms of code U1149 include malfunctioning turn signals, inoperative windshield wipers, non-responsive headlights, and other issues related to the multi-function switch.

3. What are the possible causes of OBDII code U1149 in Dodge vehicles?

Potential causes of code U1149 include a faulty multi-function switch, damaged wiring or connectors, a blown fuse, or issues with the vehicle's onboard computer.

4. How can I diagnose OBDII code U1149 in my Dodge vehicle?

Diagnosing code U1149 typically involves using a diagnostic scanner to retrieve the code, checking the connections to the multi-function switch, inspecting the wiring for damage, and testing the switch itself for functionality.

5. How can I repair OBDII code U1149 in my Dodge vehicle?

To repair code U1149, you may need to replace the multi-function switch if it is faulty, repair any damaged wiring or connectors, reset the onboard computer, and clear the error code with a diagnostic scanner.

6. Can OBDII code U1149 in Dodge vehicles be fixed without professional help?

While some DIY enthusiasts may be able to address code U1149 by replacing the multi-function switch or checking the wiring, it is recommended to seek professional help for accurate diagnosis and repair.

7. Is it safe to continue driving with OBDII code U1149 in my Dodge vehicle?

It is not recommended to drive with code U1149 present, as it may affect crucial functions like turn signals and headlights, compromising safety on the road. Prompt diagnosis and repair are advised.

8. How do I prevent OBDII code U1149 from appearing in my Dodge vehicle?

Regular maintenance and inspection of the multi-function switch, wiring, and connectors can help prevent code U1149 from occurring. Addressing any issues promptly can also prevent further complications.

9. Can extreme weather conditions cause OBDII code U1149 to trigger in Dodge vehicles?

Extreme weather conditions like heavy rain or snow may contribute to code U1149 by causing water damage to the multi-function switch or its connections. Ensuring proper sealing and protection can help prevent such issues.

10. Are there any recalls or technical service bulletins related to OBDII code U1149 in Dodge vehicles?

It's advisable to check with the manufacturer or a Dodge dealership for any recalls or technical service bulletins related to code U1149, as they may provide additional guidance or solutions for this specific issue.

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