AutoCodes – Lexus – U0293 Lexus

U0293 Lexus Code - Lost Communication With Hybrid Vehicle ECU

Quick Answer

The Controller Area Network (CAN) is a serial data communication system for real-time application. Common causes include Faulty Hybrid Vehicle (HV) Electronic Control Unit (ECU), Hybrid Vehicle ECU harness is open or shorted, Hybrid Vehicle ECU 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: U0293 Lexus indicates Lost Communication With Hybrid Vehicle ECU.
Common causes: Common causes include Faulty Hybrid Vehicle (HV) Electronic Control Unit (ECU), Hybrid Vehicle ECU harness is open or shorted, Hybrid Vehicle ECU 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 4,485

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 Apr 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0293 Lexus Description

The Controller Area Network (CAN) is a serial data communication system for real-time application. It is a multiplex communication system designed for on-vehicle use that provides a superior communication speed of 500 kbps and a capability to detect malfunction. Through the combination of the CANH and CANL bus lines, the CAN is able to maintain communication based on differential voltage.

OBDII Code U0293 Lexus - Lost Communication With Hybrid Vehicle ECU - AutoCodes.com — U0293 Lexus Code - Lost Communication With Hybrid Vehicle ECU

What does this mean?

What are the Possible Causes of the DTC U0293 Lexus?

Faulty Hybrid Vehicle (HV) Electronic Control Unit (ECU)
Hybrid Vehicle ECU harness is open or shorted
Hybrid Vehicle ECU circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC U0293 Lexus?

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 U0293 Lexus 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 U0293 Lexus code?

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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 U0293 Lexus Code

1. What are common symptoms of the OBDII code U0293 in a Lexus indicating a lost communication with the Hybrid Vehicle ECU?

- Common symptoms include the vehicle not starting, poor fuel efficiency, loss of power, and various warning lights on the dashboard.

2. What are the possible causes of the U0293 code in a Lexus?

- The code may be triggered by issues such as a faulty Hybrid Vehicle ECU, damaged wiring or connectors, low battery voltage, or software malfunctions.

3. How can I diagnose the U0293 code in my Lexus?

- Diagnosing the U0293 code typically involves using a diagnostic scanner to retrieve the code, checking the wiring and connectors for any visible damage, and testing the Hybrid Vehicle ECU for functionality.

4. Can I still drive my Lexus with the U0293 code present?

- It is not recommended to drive the vehicle with the U0293 code active, as it can lead to performance issues and potential safety hazards. It is best to address the issue promptly.

5. How do I repair the U0293 code in my Lexus?

- Repairing the U0293 code often involves fixing the underlying issue causing the communication loss, which may include replacing the Hybrid Vehicle ECU, repairing damaged wiring, or addressing any voltage issues.

6. Is the U0293 code specific to Lexus vehicles only?

- No, the U0293 code indicating lost communication with the Hybrid Vehicle ECU can appear in various hybrid vehicles from different manufacturers, not limited to Lexus.

7. Can a DIY enthusiast fix the U0293 code issue in a Lexus?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the U0293 code may require specialized tools and expertise, making it advisable to seek professional help.

8. How can I prevent the U0293 code from recurring in my Lexus?

- Regular maintenance checks, ensuring proper battery voltage, and addressing any wiring issues promptly can help prevent the U0293 code from recurring in your Lexus.

9. Will resetting the U0293 code make it go away permanently?

- Resetting the code may temporarily clear the warning lights, but if the underlying issue causing the U0293 code is not addressed, it is likely to reappear.

10. Is it safe to clear the U0293 code using an OBDII scanner without fixing the problem?

- Clearing the code without fixing the root cause is not recommended, as it may lead to ongoing issues with your Lexus's performance and safety. It is best to address the problem first.