U149D Code - LBSS Receives An Implausible Message From The BCM
Quick Answer
The U149D diagnostic trouble code indicates that the Left Blind Spot Sensor System (LBSS) in the vehicle has received a message from the Body Control Module (BCM) that is deemed implausible or inconsistent. Common causes include Faulty LBSS sensor, Wiring harness issues, BCM software malfunction. 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 indicates LBSS Receives An Implausible Message From The BCM.
- Common causes
- Common causes include Faulty LBSS sensor, Wiring harness issues, BCM software malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code U149D Description
The U149D diagnostic trouble code indicates that the Left Blind Spot Sensor System (LBSS) in the vehicle has received a message from the Body Control Module (BCM) that is deemed implausible or inconsistent. The LBSS is a crucial component of the vehicle's safety system, designed to detect objects in the driver's blind spot and alert them to potential hazards during lane changes or merges. When this code is triggered, it suggests a communication error or malfunction between the LBSS and the BCM, leading to unreliable data transmission.
Common Causes of U149D
- Faulty LBSS sensor
- Wiring harness issues
- BCM software malfunction
- Poor electrical connections
- Water or debris intrusion in sensor system
Symptoms of U149D
- Dashboard warning light illuminated
- Inconsistent or inaccurate blind spot warnings
- Loss of LBSS functionality
- Erratic behavior during lane changes
- Vehicle may go into limp mode
How to Fix U149D
- Begin by conducting a thorough visual inspection of the LBSS sensors, wiring, and connections for any visible damage or corrosion.
- Use a diagnostic scan tool to retrieve and analyze the specific fault codes, focusing on the U149D code to identify the root cause of the issue.
- Test the LBSS sensors and wiring for continuity and proper functioning, replacing any damaged components as needed.
- Check and reset the BCM software to ensure proper communication with the LBSS system.
- Clear the fault codes from the vehicle's memory and perform a road test to verify that the issue has been resolved.
Cost to Fix U149D
The typical repair costs for addressing the U149D code can vary depending on the extent of the damage and the specific components that require replacement. On average, the cost of parts for LBSS sensor replacement or wiring repairs can range from $200 to $500. Labor charges at auto repair shops typically range from $80 to $150 per hour, with the total repair cost potentially amounting to $300 to $800 or more. It is advisable to consult with a professional mechanic or dealership for a more accurate estimate based on the vehicle's make and model, as well as any additional diagnostic or repair services required.
Need more information about the U149D code?
Need more information on how to fix the U149D code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U149D code diagnosed by a professional: Find a repair shop in your area
Code U149D Information for Specific Makes
- U149D Chrysler — LBSS Receives An Implausible Message From The BCM
- U149D Dodge — LBSS Receives An Implausible Message From The BCM
- U149D Jeep — LBSS Receives An Implausible Message From The BCM
- U149D RAM — LBSS Receives An Implausible Message From The BCM
Frequently Asked Questions about U149D Code
What are the common symptoms of OBDII code U149D?
- Common symptoms may include erratic behavior of the lane departure warning system, malfunction indicator light (MIL) illumination, and potential loss of communication with the body control module (BCM).
What does the OBDII code U149D mean?
- OBDII code U149D indicates that the LBSS (Lane Departure Warning System) has received an implausible message from the BCM (Body Control Module).
What are the possible causes of OBDII code U149D?
- Possible causes may include a faulty BCM, a wiring issue between the BCM and LBSS, software glitches, or a communication error between the modules.
How do I diagnose the OBDII code U149D?
- Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking for additional related codes, and then inspecting the wiring, connectors, and modules involved in the LBSS and BCM communication.
How can I repair OBDII code U149D?
- Repair options may include repairing or replacing any damaged wiring, ensuring proper connections between the LBSS and BCM, updating software if applicable, or replacing a faulty BCM.
Can I drive my vehicle with OBDII code U149D?
- It is not recommended to drive the vehicle with unresolved U149D code, as it may affect the proper functioning of the lane departure warning system and potentially compromise vehicle safety.
How much does it cost to fix OBDII code U149D?
- The cost of fixing OBDII code U149D can vary depending on the root cause of the issue, the required repairs, and whether any parts need to be replaced. It is recommended to consult a professional for an accurate estimate.
Is OBDII code U149D a common issue in certain vehicle models?
- The prevalence of OBDII code U149D may vary among different vehicle models, but it has been reported in some vehicles equipped with lane departure warning systems and BCMs.
What should I do if OBDII code U149D keeps coming back after repairs?
- If the U149D code persists after repairs, further diagnosis may be needed to identify any underlying issues that were not initially addressed. Consulting a professional technician for advanced troubleshooting is recommended.
Discuss the causes and fixes for U149D OBDII Code
Code U149D comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.