AutoCodes – Dodge – U1149 Dodge

U1149 Dodge Code - Lost Communication With Multi-Function Switch

Quick Answer

The Powertrain Control Module (PCM) monitors the Multi-Function Switch. Common causes include Faulty Left Multifunction Switch, Left Multifunction Switch harness is open or shorted, Left Multifunction Switch 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: U1149 Dodge indicates Lost Communication With Multi-Function Switch.
Common causes: Common causes include Faulty Left Multifunction Switch, Left Multifunction Switch harness is open or shorted, Left Multifunction Switch 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 7,286

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 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1149 Dodge Description

The Powertrain Control Module (PCM) monitors the Multi-Function Switch. The PCM sets the OBDII code when the Multi-Function Switch is not to factory specifications or the Cluster does not receive any LIN Bus messages from the Left Multifunction Switch.

OBDII Code U1149 Dodge - Lost Communication With Multi-Function Switch - AutoCodes.com — U1149 Dodge Code - Lost Communication With Multi-Function Switch

What does this mean?

What are the Possible Causes of the DTC U1149 Dodge?

Faulty Left Multifunction Switch
Left Multifunction Switch harness is open or shorted
Left Multifunction Switch circuit poor electrical connection

How to Fix the DTC U1149 Dodge?

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 U1149 Dodge 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 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.