AutoCodes – Buick – U0151 Buick

U0151 Buick Code - Lost Communication With Inflatable Restraint Sensing And Diagnostic Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Inflatable Restraint Sensing And Diagnostic Module, Inflatable Restraint Sensing And Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing And Diagnostic 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: U0151 Buick indicates Lost Communication With Inflatable Restraint Sensing And Diagnostic Module.
Common causes: Common causes include Faulty Inflatable Restraint Sensing And Diagnostic Module, Inflatable Restraint Sensing And Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing And Diagnostic 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 3,045

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 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0151 Buick Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Inflatable Restraint Sensing And Diagnostic Module has not been received.

OBDII Code U0151 Buick - Lost Communication With Inflatable Restraint Sensing And Diagnostic Module - AutoCodes.com — U0151 Buick Code - Lost Communication With Inflatable Restraint Sensing And Diagnostic Module

What does this mean?

What are the Possible Causes of the DTC U0151 Buick?

Faulty Inflatable Restraint Sensing And Diagnostic Module
Inflatable Restraint Sensing And Diagnostic Module harness is open or shorted
Inflatable Restraint Sensing And Diagnostic Module circuit poor electrical connection

How to Fix the DTC U0151 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 U0151 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 U0151 Buick Code

1. What does the OBDII code U0151 mean for a Buick?

The U0151 code indicates a lost communication with the Inflatable Restraint Sensing and Diagnostic Module (SDM), which controls the airbag system.

2. What are the common symptoms of the U0151 code in a Buick?

Symptoms may include the airbag warning light staying on, failure of the airbag system to deploy in a crash, or no noticeable symptoms beyond the stored code.

3. What causes the U0151 code to appear in a Buick?

Common causes include a faulty SDM, damaged communication wiring, poor electrical connections, a blown fuse, or a malfunction in the CAN (Controller Area Network) system.

4. Is the U0151 code serious?

Yes, it is serious as it impacts the airbag systemâ€™s functionality, which is a critical safety feature. Immediate diagnosis and repair are recommended.

5. How can I diagnose the U0151 code in my Buick?

Start by checking the SDM fuse, inspecting the wiring and connectors for damage or corrosion, and using a diagnostic scanner to verify data communication on the CAN bus.

6. Can I still drive my Buick with the U0151 code?

While the vehicle may still be drivable, the airbag system may not function in a crash, so it is unsafe to drive without addressing the issue.

7. How do I fix the U0151 code in my Buick?

Repairs may include replacing a blown fuse, repairing or replacing damaged wiring or connectors, reprogramming or replacing the SDM, or addressing issues within the CAN system.

8. Can a dead battery cause the U0151 code?

Yes, a dead or weak battery can disrupt communication between modules, potentially triggering the U0151 code.

9. How much does it cost to repair the U0151 code on a Buick?

Repair costs vary but can range from $100 for minor wiring repairs to over $1,000 if the SDM needs replacement and reprogramming.

10. Do I need a mechanic to fix the U0151 code?

While basic checks like inspecting fuses can be done by a DIYer, diagnosing and repairing module communication issues typically require professional tools and expertise.