AutoCodes – Generic – U1500

U1500 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: U1500 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.

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Code Popularity 6,959

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
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Code U1500 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 U1500 - Local Interconnect Network Bus Failure - AutoCodes.com — U1500 Code - Local Interconnect Network Bus Failure

What does this mean?

What are the Possible Causes of the DTC U1500?

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

How to Fix the DTC U1500?

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 U1500 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 U1500 code?

Need more information on how to fix the U1500 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1500 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1500 Buick — Local Interconnect Network Bus Failure
U1500 Cadillac — Local Interconnect Network Bus Failure
U1500 Chevrolet — Local Interconnect Network Bus Failure
U1500 GMC — Local Interconnect Network Bus Failure

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 U1500 Code

1. What are the common symptoms of OBDII code U1500 (Local Interconnect Network Bus Failure)?

- Common symptoms include issues with communication between various modules in the vehicle, such as the engine control module, transmission control module, and body control module.

2. What are the possible causes of OBDII code U1500?

- The code U1500 can be triggered by issues such as a faulty local interconnect network (LIN) bus, damaged wiring, loose connections, or a malfunctioning control module.

3. How can I diagnose the Local Interconnect Network Bus Failure related to code U1500?

- Diagnosis typically involves using a professional OBDII scan tool to communicate with the affected modules and check for any stored fault codes related to the LIN bus failure.

4. What are some repair tips for resolving OBDII code U1500?

- Repairing U1500 may involve inspecting and repairing any damaged wiring, ensuring secure connections, resetting the affected modules, or replacing a faulty control module if necessary.

5. Can OBDII code U1500 cause serious issues with the vehicle's performance?

- While the code itself may not directly impact the vehicle's drivability, unresolved communication issues related to the LIN bus failure can lead to malfunctions in various systems, affecting overall performance.

6. Is it safe to continue driving with OBDII code U1500 present?

- It is generally not recommended to continue driving with unresolved OBDII codes, including U1500, as they can indicate underlying issues that may worsen over time and potentially lead to more severe problems.

7. How much does it typically cost to repair OBDII code U1500?

- The cost of repairing U1500 can vary depending on the root cause of the issue, the extent of repairs needed, and whether any parts require replacement. Costs may range from a simple wiring repair to a control module replacement.

8. Can I clear the U1500 code myself, or do I need a professional to do it?

- You can attempt to clear the U1500 code using an OBDII scan tool, but it is important to address the underlying cause of the code to prevent it from reoccurring. If you are unsure about the repair process, seeking professional help is recommended.

9. How long does it take to repair OBDII code U1500?

- The repair time for U1500 can vary based on the complexity of the issue and the specific repairs needed. Simple fixes like fixing a loose connection may take less time, while diagnosing and replacing a control module can be more time-consuming.

10. Are there any preventive measures to avoid OBDII code U1500 in the future?

- Regular vehicle maintenance, checking for loose connections or damaged wiring during inspections, and addressing any communication issues promptly can help prevent OBDII code U1500 and similar problems from occurring.