AutoCodes – Cadillac – U1502 Cadillac

U1502 Cadillac 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 Cadillac 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 1,672

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

What does this mean?

What are the Possible Causes of the DTC U1502 Cadillac?

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

How to Fix the DTC U1502 Cadillac?

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 Cadillac 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 Cadillac code?

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

Need Help with the Code?

Get the U1502 Cadillac 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 Cadillac Code

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

- Common symptoms include issues with various vehicle systems like the instrument cluster, radio, airbag system, and other electronic components.

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

- Potential causes may include damaged wiring, loose connections, faulty modules, or issues with the local interconnect network itself.

3. How can I diagnose the U1502 code in a Cadillac with a Local Interconnect Network Bus Failure?

- Diagnosis typically involves using a scan tool to retrieve the code, checking for other related codes, inspecting the wiring and connections, and testing the network modules.

4. Can a DIY enthusiast repair the U1502 code related to Local Interconnect Network Bus Failure in a Cadillac?

- While basic checks like inspecting connections and wiring can be done by DIYers, more complex repairs may require professional diagnosis and assistance.

5. Is it safe to continue driving a Cadillac with the U1502 code indicating Local Interconnect Network Bus Failure?

- It is not recommended to drive the vehicle with this code present, as it may lead to further electrical issues and potentially affect the vehicle's overall performance.

6. Are there any common quick fixes or temporary solutions for the U1502 code in a Cadillac?

- Quick fixes may include checking and securing loose connections, resetting the system, or clearing the code to see if it reoccurs.

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

- Repair costs can vary depending on the exact cause of the issue, but it is advisable to budget for diagnostic fees, parts replacement, and labor costs.

8. Can weather conditions or environmental factors trigger the U1502 code in a Cadillac?

- Extreme temperatures, moisture, or other environmental factors can potentially impact the local interconnect network and contribute to the U1502 code.

9. Will disconnecting the battery reset the U1502 code in a Cadillac with a Local Interconnect Network Bus Failure?

- Disconnecting the battery may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

10. How long does it typically take to repair the U1502 code indicating Local Interconnect Network Bus Failure in a Cadillac?

- The repair time can vary based on the complexity of the issue, availability of parts, and the expertise of the technician, but it could range from a few hours to a full day.