Engine-CodesChrysler – U149D Chrysler

U149D Chrysler Code - LBSS Receives An Implausible Message From The BCM

Quick Answer

The U149D diagnostic trouble code for Chrysler vehicles indicates that the LBSS (Left Blind Spot Sensor) has received an implausible message from the BCM (Body Control Module). Common causes include Faulty left blind spot sensor, Wiring or connection issues between the sensor and the body control module, Defective body control module. 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
U149D Chrysler indicates LBSS Receives An Implausible Message From The BCM.
Common causes
Common causes include Faulty left blind spot sensor, Wiring or connection issues between the sensor and the body control module, Defective body control module.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code U149D Chrysler Description

The U149D diagnostic trouble code for Chrysler vehicles indicates that the LBSS (Left Blind Spot Sensor) has received an implausible message from the BCM (Body Control Module). This means that there is a communication issue between the left blind spot sensor and the body control module, which can lead to various problems with the vehicle's safety and convenience systems.

OBDII Code U149D Chrysler - LBSS Receives An Implausible Message From The BCM
U149D Chrysler Code - LBSS Receives An Implausible Message From The BCM

Common Causes of U149D Chrysler

  1. Faulty left blind spot sensor
  2. Wiring or connection issues between the sensor and the body control module
  3. Defective body control module
  4. Software glitches or communication errors
  5. Electrical problems in the system

Symptoms of U149D Chrysler

  1. Malfunction or complete failure of the left blind spot monitoring system
  2. Inaccurate or intermittent warnings from the blind spot sensor
  3. Malfunction of the lane departure warning system
  4. Dashboard warning light illuminated indicating a problem with the blind spot sensor

How to Fix U149D Chrysler

  1. Begin by conducting a thorough inspection of the left blind spot sensor, checking for any physical damage or signs of malfunction.
  2. Inspect the wiring and connections between the sensor and the body control module, ensuring that all connections are secure and free of corrosion.
  3. Test the body control module for any faults or errors using a diagnostic tool to pinpoint the source of the communication issue.
  4. If necessary, replace the faulty left blind spot sensor or body control module with a new one to restore proper communication between the components.
  5. Clear the diagnostic trouble code from the vehicle's system using a diagnostic tool and perform a test drive to ensure that the issue has been resolved.

Cost to Fix U149D Chrysler

The typical repair costs for addressing the U149D code can vary depending on the specific cause of the issue and the parts and labor required for the repair. In general, replacing a faulty left blind spot sensor or body control module can range from $200 to $600, including parts and labor. Additional costs may apply if there are other underlying issues contributing to the communication problem. It is recommended to consult with a professional mechanic or auto repair shop to get an accurate estimate based on the vehicle's make and model, as well as the extent of the repairs needed. Keep in mind that labor rates can vary between different shops and locations, so it's essential to inquire about specific rates before proceeding with the repair.

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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 U149D Chrysler Code

What are common symptoms of OBDII code U149D in a Chrysler vehicle?

Symptoms may include issues with the Lane Departure Warning system, malfunction indicator light (MIL) illumination, and possible loss of communication with the Body Control Module (BCM).

What does the OBDII code U149D in a Chrysler indicate?

The code U149D indicates that the LBSS (Lane Departure Warning System) module has received an implausible message from the Body Control Module (BCM).

What are possible causes of the U149D code in a Chrysler?

Possible causes of the U149D code include wiring issues, a faulty LBSS module, a malfunctioning BCM, software glitches, or communication network problems within the vehicle.

How can I diagnose the U149D trouble code in my Chrysler?

Diagnosis usually involves using a professional OBDII scanner to retrieve the code, checking the wiring and connections related to the LBSS and BCM modules, and performing a thorough inspection of the involved components.

Can I still drive my Chrysler with the U149D code present?

While the vehicle may still be operable with the U149D code, it is recommended to address the issue promptly to ensure the proper functioning of the Lane Departure Warning system and to prevent potential safety concerns.

How can I repair the U149D code in my Chrysler?

Repair steps may include repairing or replacing damaged wiring, replacing the LBSS or BCM module if necessary, updating software as per manufacturer recommendations, and ensuring proper communication between modules.

Is it safe to clear the U149D code in my Chrysler without fixing the underlying issue?

It is not recommended to clear the U149D code without addressing the root cause, as doing so may lead to recurring problems with the Lane Departure Warning system and other related functions.

Can a DIY enthusiast fix the U149D code issue in a Chrysler?

While some basic diagnostic steps can be performed by DIY enthusiasts, addressing the U149D code may require professional diagnostic tools and expertise due to the complexity of the systems involved.

How much does it cost to repair the U149D code in a Chrysler?

The cost of repairing the U149D code can vary depending on the specific cause of the issue, the extent of the repairs needed, labor rates, and the cost of any required parts or components. It is advisable to obtain quotes from reputable mechanics or dealerships.

Where can I find more information about the U149D code in Chrysler vehicles?

For detailed information specific to your Chrysler model and year, refer to the vehicle's service manual, consult with a certified mechanic, or visit online automotive forums for insights from other owners who may have experienced similar issues.

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