AutoCodes – Toyota – U0293 2005 Toyota Prius

U0293 2005 Toyota Prius 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 2005 Toyota Prius 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 7,875

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 2005 Toyota Prius 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 2005 Toyota Prius - Lost Communication With Hybrid Vehicle ECU - AutoCodes.com — U0293 2005 Toyota Prius Code - Lost Communication With Hybrid Vehicle ECU

What does this mean?

What are the Possible Causes of the DTC U0293 2005 Toyota Prius?

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 2005 Toyota Prius?

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 2005 Toyota Prius 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 2005 Toyota Prius code?

Need more information on how to fix the U0293 2005 Toyota Prius code? Get Access to Factory Service Manuals

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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 2005 Toyota Prius Code

1. What does the OBDII code U0293 mean for a 2005 Toyota Prius?

The code U0293 indicates a communication problem between the vehicle's onboard diagnostic system and the Hybrid Vehicle ECU.

2. What are the common symptoms of U0293 in a 2005 Toyota Prius?

Common symptoms of the U0293 code may include the hybrid system warning light illuminating on the dashboard, reduced hybrid system performance, and potentially difficulty starting the vehicle.

3. What are some possible causes of the U0293 code in a 2005 Toyota Prius?

Possible causes of the U0293 code include a faulty Hybrid Vehicle ECU, damaged wiring or connectors in the communication network, or software issues within the vehicle's systems.

4. How can I diagnose the U0293 code in my 2005 Toyota Prius?

Diagnosing the U0293 code typically involves using a diagnostic scanner to retrieve the code, checking for any other related codes, inspecting the wiring and connectors for damage, and possibly testing the Hybrid Vehicle ECU.

5. Can I still drive my 2005 Toyota Prius with the U0293 code present?

It is not recommended to continue driving your Prius with the U0293 code present, as it could lead to further damage to the hybrid system. It's best to have the issue diagnosed and repaired as soon as possible.

6. Is it possible to repair the U0293 code in a 2005 Toyota Prius myself?

While some DIY enthusiasts may attempt to diagnose and repair the U0293 code, it is usually best to have a professional technician with experience in hybrid systems work on the issue due to the complexity involved.

7. How much does it typically cost to repair the U0293 code in a 2005 Toyota Prius?

The cost of repairing the U0293 code can vary depending on the specific cause of the issue. Costs may include labor for diagnosis and repair, parts replacement, and any necessary reprogramming of the vehicle's systems.

8. Can resetting the U0293 code on my 2005 Toyota Prius make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. The root cause of the communication problem needs to be identified and resolved to prevent the code from reoccurring.

9. How long does it take to repair the U0293 code in a 2005 Toyota Prius?

The repair time for the U0293 code can vary depending on the cause and complexity of the issue. Some repairs may be completed in a few hours, while others may require more time for diagnosis and parts ordering.

10. Is the U0293 code a common issue in 2005 Toyota Prius vehicles?

While the U0293 code is not extremely common in 2005 Toyota Prius vehicles, it is a known issue that can occur due to various factors related to the hybrid system's communication network.