AutoCodes – Chevrolet – U240E Chevrolet

U240E Chevrolet Code - Transmission Range Selector Control Module Powertrain Sensor CAN Bus Off

Quick Answer

The powertrain high-speed General Motors Local Area Network (GMLAN)serial data circuits are serial data buses used to communicate information between the devices. Common causes include Faulty Transmission Range Selector Control Module, Transmission Range Selector Control Module harness is open or shorted, Transmission Range Selector 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: U240E Chevrolet indicates Transmission Range Selector Control Module Powertrain Sensor CAN Bus Off.
Common causes: Common causes include Faulty Transmission Range Selector Control Module, Transmission Range Selector Control Module harness is open or shorted, Transmission Range Selector 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 493

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 Jun 17, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U240E Chevrolet Description

The powertrain high-speed General Motors Local Area Network (GMLAN)serial data circuits are serial data buses used to communicate information between the devices. The powertrain high speed GMLAN serial data circuits also connect directly to the X84 Data Link Connector (DLC) for programming purposes. If this serial data system is inoperative, the devices will still communicate with the scan tool due to other serial data systems but not with each other. The device setting the Diagnostic Trouble Code (DTC) has attempted to establish communications on the powertrain high-speed GMLAN serial data circuits more than 3 times.

OBDII Code U240E Chevrolet - Transmission Range Selector Control Module Powertrain Sensor CAN Bus Off - AutoCodes.com — U240E Chevrolet Code - Transmission Range Selector Control Module Powertrain Sensor CAN Bus Off

What does this mean?

What are the Possible Causes of the DTC U240E Chevrolet?

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

How to Fix the DTC U240E 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 U240E 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 U240E Chevrolet Code

1. What are the common symptoms of OBDII code U240E in a Chevrolet related to the Transmission Range Selector Control Module Powertrain Sensor CAN Bus Off?

- Common symptoms include issues with shifting gears, erratic transmission behavior, and potential warning lights on the dashboard.

2. What could cause the U240E code to appear in a Chevrolet?

- The U240E code might be triggered by a fault in the Transmission Range Selector Control Module or issues with the Powertrain Sensor CAN Bus communication.

3. How can I diagnose the U240E code in my Chevrolet?

- Diagnosing the U240E code typically involves using a professional OBDII scanner to read the code and further testing of the transmission range selector module and CAN bus system.

4. Can I continue driving my Chevrolet with the U240E code present?

- It is not recommended to drive the vehicle with the U240E code active, as it can lead to potential transmission issues and unsafe driving conditions.

5. What are some possible repair options for fixing the U240E code in a Chevrolet?

- Repair options may include checking and repairing the wiring connections, replacing the Transmission Range Selector Control Module, or addressing any issues with the Powertrain Sensor CAN Bus system.

6. Is it necessary to visit a mechanic for the U240E code in a Chevrolet?

- Due to the complexity of transmission systems and CAN bus communication, it is advisable to seek professional help from a qualified mechanic to properly diagnose and repair the U240E code.

7. Are there any preventive measures to avoid the U240E code from reoccurring?

- Regular maintenance checks, ensuring proper wiring connections, and addressing any transmission issues promptly can help prevent the U240E code from reoccurring.

8. Can a DIY enthusiast attempt to fix the U240E code in a Chevrolet?

- While some basic troubleshooting steps can be taken, fixing the U240E code often requires specialized tools and expertise, making it more suitable for professional mechanics.

9. How long does it typically take to repair the U240E code in a Chevrolet?

- The repair time for the U240E code can vary depending on the specific issue, but it may take several hours to a day to diagnose and fix the underlying problem.

10. Is the U240E code specific to Chevrolet vehicles only?

- The U240E code related to the Transmission Range Selector Control Module Powertrain Sensor CAN Bus Off can be found in various vehicle makes and models, not limited to Chevrolet.