AutoCodes – Toyota – U0293 Toyota

U0293 Toyota 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 Toyota 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 37,577

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

What does this mean?

What are the Possible Causes of the DTC U0293 Toyota?

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 Toyota?

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 Toyota 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 Toyota code?

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Information for Specific Toyota Models

U0293 2004 Toyota Prius — Lost Communication With Hybrid Vehicle ECU
U0293 2005 Toyota Prius — Lost Communication With Hybrid Vehicle ECU
U0293 2006 Toyota Prius — Lost Communication With Hybrid Vehicle ECU
U0293 2007 Toyota Prius — Lost Communication With Hybrid Vehicle ECU
U0293 2008 Toyota Prius — Lost Communication With Hybrid Vehicle ECU
U0293 2009 Toyota Prius — Lost Communication With Hybrid Vehicle ECU

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.