AutoCodes – Buick – U1502 Buick

U1502 Buick Code - Local Interconnect Network Bus Failure

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 Module that is not communicating, Module harness is open or shorted, 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: U1502 Buick indicates Local Interconnect Network Bus Failure.
Common causes: Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,012

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 May 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U1502 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 that includes the transmitter device availability has not been received.

OBDII Code U1502 Buick - Local Interconnect Network Bus Failure - AutoCodes.com — U1502 Buick Code - Local Interconnect Network Bus Failure

What does this mean?

What are the Possible Causes of the DTC U1502 Buick?

Faulty Module that is not communicating
Module harness is open or shorted
Module circuit poor electrical connection

How to Fix the DTC U1502 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 U1502 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.

Need more information about the U1502 Buick code?

Need more information on how to fix the U1502 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1502 Buick code diagnosed by a professional: Find a repair shop in your area

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 U1502 Buick Code

1. What are the common symptoms of OBDII code U1502 in a Buick related to Local Interconnect Network Bus Failure?

- Common symptoms include issues with the vehicle's network communication system, such as intermittent or complete loss of connection between various control modules.

2. What are some possible causes of the U1502 code in a Buick indicating Local Interconnect Network Bus Failure?

- Potential causes may include damaged wiring or connectors, faulty control modules, software glitches, or issues with the network communication system itself.

3. How can I diagnose the U1502 code in my Buick related to Local Interconnect Network Bus Failure?

- Diagnosis typically involves using a diagnostic scan tool to check for stored trouble codes and conducting a thorough inspection of the network communication components for any visible damage.

4. Are there any simple repair tips for addressing the U1502 code in a Buick?

- Before attempting any repairs, it's advisable to check and reset the code using a diagnostic scan tool. If the code persists, seek professional help to properly diagnose and repair the underlying issue.

5. Can I drive my Buick with the U1502 code indicating Local Interconnect Network Bus Failure?

- It is generally not recommended to drive the vehicle with unresolved network communication issues, as it may lead to further malfunctions or safety concerns. Seek professional assistance to address the problem promptly.

6. How much does it typically cost to repair the U1502 code related to Local Interconnect Network Bus Failure in a Buick?

- Repair costs can vary depending on the specific cause of the issue, the extent of the damage, and labor rates in your area. It's best to consult with a qualified mechanic for an accurate estimate.

7. Is the U1502 code in a Buick related to Local Interconnect Network Bus Failure a common issue?

- While this code may not be as common as some other OBDII codes, network communication problems can occur in modern vehicles, including Buick models equipped with sophisticated control systems.

8. Can resetting the U1502 code in my Buick fix the Local Interconnect Network Bus Failure issue permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying problem causing the U1502 code is not addressed, it is likely to reappear. Proper diagnosis and repair are necessary for a permanent solution.

9. Are there any recalls or technical service bulletins related to the U1502 code in Buick vehicles?

- It's advisable to check with a Buick dealership or authorized service center to inquire about any recalls or technical bulletins specific to the U1502 code and Local Interconnect Network Bus Failure for your vehicle.

10. Can I attempt to repair the U1502 code issue in my Buick at home, or should I seek professional help?

- Due to the complexity of network communication systems in modern vehicles, it is recommended to seek professional help from a qualified mechanic or technician familiar with diagnosing and repairing such issues.