AutoCodes – Buick – U151A Buick

U151A Buick Code - Body Control Module Lost Communication With Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module On LIN Bus

Quick Answer

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module, Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module harness is open or shorted, Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module 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: U151A Buick indicates Body Control Module Lost Communication With Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module On LIN Bus.
Common causes: Common causes include Faulty Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module, Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module harness is open or shorted, Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module 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 762

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 Jun 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U151A Buick Description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message to the Body Control Module (BCM) from the Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module has not been received.

OBDII Code U151A Buick - Body Control Module Lost Communication With Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module On LIN Bus - AutoCodes.com — U151A Buick Code - Body Control Module Lost Communication With Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U151A Buick?

Faulty Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module
Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module harness is open or shorted
Rain Sensor / Rain/Ambient Light Sensor Module / Rain Sensor Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC U151A Buick?

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 U151A Buick 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 U151A Buick Code

1. What are common symptoms of the OBDII code U151A in a Buick related to the Body Control Module losing communication with the Rain Sensor Module?

- Common symptoms include erratic behavior of the rain sensor, malfunctioning automatic wipers, and issues with ambient light sensor functionality.

2. What are possible causes of the U151A code in a Buick, indicating a communication problem between the Body Control Module and the Rain Sensor Module?

- Possible causes include damaged wiring or connectors, a faulty rain sensor module, a malfunctioning body control module, or issues with the LIN bus communication network.

3. How can I diagnose the U151A code in my Buick when it points to a communication loss between the Body Control Module and the Rain Sensor Module?

- Diagnose the code by checking the wiring and connectors for any visible damage, testing the rain sensor module functionality, and using a diagnostic tool to inspect the communication signals on the LIN bus.

4. What repair tips can help resolve the U151A code in a Buick related to the Body Control Module's communication with the Rain Sensor Module?

- Repair tips include repairing or replacing damaged wiring and connectors, replacing a faulty rain sensor module, reprogramming the body control module if necessary, and ensuring proper communication on the LIN bus.

5. Is it safe to drive my Buick with the U151A code indicating a communication issue between the Body Control Module and the Rain Sensor Module?

- It is generally safe to drive the vehicle with this code, but be aware that the automatic wiper and ambient light sensor functions may not work correctly until the issue is resolved.

6. Can resetting the OBDII system clear the U151A code related to the Body Control Module's communication problem with the Rain Sensor Module in a Buick?

- Resetting the OBDII system may temporarily clear the code, but if the underlying communication issue persists, the code is likely to reappear.

7. How much does it typically cost to repair the U151A code in a Buick due to the Body Control Module losing communication with the Rain Sensor Module?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve labor costs for diagnosis and repair, as well as potential part replacement costs.

8. Can a DIY enthusiast fix the U151A code related to the Body Control Module's communication problem with the Rain Sensor Module in a Buick?

- DIY enthusiasts with automotive repair experience and the necessary tools may be able to diagnose and potentially repair this issue, especially if it involves inspecting wiring and connectors.

9. Are there any recalls or technical service bulletins related to the U151A code in Buick vehicles regarding the Body Control Module's communication with the Rain Sensor Module?

- It is recommended to check with Buick dealerships or online resources for any recalls or technical service bulletins related to this specific issue to see if there are known solutions or updates available.

10. How often does the U151A code occur in Buick vehicles, indicating a communication issue between the Body Control Module and the Rain Sensor Module?

- The frequency of encountering this specific code may vary, but it is not uncommon in Buick vehicles equipped with rain sensor modules and automatic wiper systems.