AutoCodes – Chevrolet – U135E Chevrolet

U135E Chevrolet Code - Lost Communication With Transmission Control Module On Engine Control Module LIN Bus 1

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: U135E Chevrolet indicates Lost Communication With Transmission Control Module On Engine Control Module LIN Bus 1.
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.

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Code Popularity 456

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U135E Chevrolet 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 U135E Chevrolet - Lost Communication With Transmission Control Module On Engine Control Module LIN Bus 1 - AutoCodes.com — U135E Chevrolet Code - Lost Communication With Transmission Control Module On Engine Control Module LIN Bus 1

What does this mean?

What are the Possible Causes of the DTC U135E Chevrolet?

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

How to Fix the DTC U135E Chevrolet?

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 U135E Chevrolet 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 U135E Chevrolet Code

1. What are the common symptoms of OBDII code U135E in a Chevrolet vehicle?

- Common symptoms include issues with shifting gears, erratic transmission behavior, warning lights like the Check Engine Light or Transmission Warning Light, and possible stalling.

2. What can cause the OBDII code U135E in a Chevrolet indicating "Lost Communication With Transmission Control Module On Engine Control Module LIN Bus 1"?

- This code is typically caused by wiring issues, loose connections, a faulty Transmission Control Module (TCM), a malfunctioning Engine Control Module (ECM), or a problem with the LIN Bus communication network.

3. How can I diagnose the OBDII code U135E in a Chevrolet?

- Diagnosis involves checking the wiring and connectors for any damage or corrosion, ensuring the TCM and ECM are functioning correctly, and using a scan tool to communicate with the affected modules for further troubleshooting.

4. What are some repair tips for resolving the U135E code in a Chevrolet?

- Repair tips include inspecting and repairing any damaged wiring or connectors, ensuring all connections are secure, resetting the fault codes after repairs, and retesting the vehicle to confirm the issue has been resolved.

5. Can the OBDII code U135E in a Chevrolet be fixed without professional help?

- While some basic checks like inspecting connections and wiring can be done by DIY enthusiasts, resolving complex issues with the TCM or ECM may require professional diagnosis and repair to ensure proper functionality.

6. Are there any safety concerns associated with the U135E code in a Chevrolet?

- Yes, unresolved communication issues between the transmission and engine control modules can potentially affect vehicle drivability and safety, so it's recommended to address this code promptly.

7. What happens if the U135E code in a Chevrolet is ignored?

- Ignoring the U135E code can lead to ongoing transmission problems, potential drivability issues, decreased fuel efficiency, and may eventually cause further damage to the vehicle's control modules.

8. Can a software update fix the U135E code in a Chevrolet?

- In some cases, a software update provided by the manufacturer may address communication issues between modules, so it's advisable to check for any available updates as part of the diagnostic process.

9. How long does it typically take to repair the U135E code in a Chevrolet?

- The repair time can vary depending on the underlying cause of the code. Simple fixes like reconnecting a loose wire may take a short time, while diagnosing and repairing more complex issues could require several hours or more.

10. Is the U135E code common in Chevrolet vehicles?

- The U135E code related to lost communication between the Transmission Control Module and Engine Control Module is a relatively common issue in Chevrolet vehicles, particularly in models equipped with advanced control systems.