AutoCodes – Buick – U135D Buick

U135D Buick Code - Lost Communication With Transmission Control Module On Chassis Control Module LIN Bus 2

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 Transmission Control Module, Transmission Control Module harness is open or shorted, Transmission Control 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
U135D Buick indicates Lost Communication With Transmission Control Module On Chassis Control Module LIN Bus 2.
Common causes
Common causes include Faulty Transmission Control Module, Transmission Control Module harness is open or shorted, Transmission Control 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 640
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 17, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code U135D 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) sets when a supervised periodic message that includes the transmitter device availability has not been received.
OBDII Code U135D Buick - Lost Communication With Transmission Control Module On Chassis Control Module LIN Bus 2 - AutoCodes.com
U135D Buick Code - Lost Communication With Transmission Control Module On Chassis Control Module LIN Bus 2

What are the Possible Causes of the DTC U135D Buick?

  • Faulty Transmission Control Module
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection

How to Fix the DTC U135D 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 U135D 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 U135D Buick code?

Need more information on how to fix the U135D Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U135D 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 U135D Buick Code

1. What are the common symptoms of OBDII code U135D in a Buick related to lost communication with the Transmission Control Module on the Chassis Control Module LIN Bus 2?

- Common symptoms include transmission shifting issues, warning lights on the dashboard, and potential loss of certain vehicle functions.

2. What are some possible causes of the U135D code in a Buick?

- Possible causes include faulty wiring or connectors, a malfunctioning Transmission Control Module, issues with the Chassis Control Module LIN Bus 2, or a communication network problem.

3. How can I diagnose the U135D code in my Buick?

- Diagnosing this code typically involves checking the wiring and connectors for damage, testing the Transmission Control Module and Chassis Control Module, and using a diagnostic scanner to analyze communication on the LIN Bus 2 network.

4. What steps can I take to repair the U135D code in my Buick?

- Repairing this code may involve repairing or replacing damaged wiring or connectors, reprogramming the Transmission Control Module, updating software, or replacing the affected control modules.

5. Is it safe to continue driving my Buick with the U135D code present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to potential transmission issues and other safety concerns. It is best to address the problem promptly.

6. Can I reset the U135D code in my Buick on my own?

- While you can try clearing the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair the U135D code in a Buick?

- The cost of repairing this code can vary depending on the specific issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Are there any preventive measures I can take to avoid encountering the U135D code in my Buick?

- Regular maintenance and inspections can help prevent issues that may lead to the U135D code. Keeping the vehicle's electrical system in good condition is key to avoiding communication errors.

9. Can a DIY enthusiast with automotive knowledge repair the U135D code in a Buick?

- While some basic troubleshooting and repairs may be possible for experienced DIY enthusiasts, diagnosing and repairing issues related to lost communication with control modules may require specialized tools and expertise.

10. How long does it typically take to repair the U135D code in a Buick?

- The repair time for this code can vary depending on the complexity of the issue and the availability of parts. It may take a few hours to a full day for a professional technician to diagnose and repair the problem.

Discuss the causes and fixes for U135D Buick OBDII Code

Code U135D Buick comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play