AutoCodes – Toyota – B2793 Toyota

B2793 Toyota Code - Transponder Chip Malfunction

Quick Answer

This Diagnostic Trouble Code (DTC) is output when trouble is found in a key during the key code registration, or the key code is not registered normally. Common causes include Faulty Key, Faulty Transponder Key Coil, Faulty Transponder Key ECU Assembly. 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: B2793 Toyota indicates Transponder Chip Malfunction.
Common causes: Common causes include Faulty Key, Faulty Transponder Key Coil, Faulty Transponder Key ECU Assembly.
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 15,860

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 Jan 16, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2793 Toyota Description

This Diagnostic Trouble Code (DTC) is output when trouble is found in a key during the key code registration, or the key code is not registered normally. Replace the key when the key code registration is not performed normally, and this DTC is detected.

OBDII Code B2793 Toyota - Transponder Chip Malfunction - AutoCodes.com — B2793 Toyota Code - Transponder Chip Malfunction

What does this mean?

What are the Possible Causes of the DTC B2793 Toyota?

Faulty Key
Faulty Transponder Key Coil
Faulty Transponder Key ECU Assembly

How to Fix the DTC B2793 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 B2793 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 B2793 Toyota code?

Need more information on how to fix the B2793 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2793 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

B2793 2013 Toyota RAV4 — Transponder Chip Malfunction
B2793 2014 Toyota RAV4 — Transponder Chip Malfunction
B2793 2015 Toyota RAV4 — Transponder Chip Malfunction
B2793 2016 Toyota RAV4 — Transponder Chip Malfunction
B2793 2017 Toyota RAV4 — Transponder Chip Malfunction
B2793 2018 Toyota RAV4 — Transponder Chip Malfunction

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 B2793 Toyota Code

1. What are the common symptoms of OBDII code B2793 Toyota (Transponder Chip Malfunction)?

The common symptoms include difficulty starting the vehicle, the engine not turning over, and the immobilizer system not recognizing the key.

2. What can cause the OBDII code B2793 Toyota to trigger?

The code B2793 Toyota can be triggered by issues with the transponder chip in the key, a faulty immobilizer system, or a communication error between the key and the vehicle's computer.

3. How can I diagnose the Transponder Chip Malfunction (B2793) in my Toyota?

Diagnosing the issue involves checking the key for damage, ensuring the key is programmed correctly, inspecting the immobilizer system for faults, and using a diagnostic scanner to read the specific error code.

4. Can I still drive my Toyota with the B2793 code present?

If the B2793 code is related to the immobilizer system, it may prevent the vehicle from starting. It is recommended to address the issue promptly to avoid being stranded.

5. Is it possible to repair the Transponder Chip Malfunction (B2793) issue myself?

Repairing the B2793 code may require specialized knowledge and tools. It is recommended to consult a professional automotive technician to accurately diagnose and fix the problem.

6. How much does it cost to repair the Transponder Chip Malfunction (B2793) in a Toyota?

The cost of repair can vary depending on the exact cause of the issue. It may involve reprogramming the key, replacing the transponder chip, or repairing the immobilizer system. Expect costs to range from $100 to $300 or more.

7. Can a locksmith fix the B2793 code issue in my Toyota?

Locksmiths with experience in automotive key programming may be able to assist with resolving the Transponder Chip Malfunction (B2793) issue by reprogramming or replacing the key.

8. Will resetting the immobilizer system clear the B2793 code?

Resetting the immobilizer system may temporarily clear the code, but if the underlying issue with the transponder chip or key programming is not addressed, the code is likely to return.

9. How often does the Transponder Chip Malfunction (B2793) occur in Toyota vehicles?

The B2793 code related to a Transponder Chip Malfunction is relatively uncommon compared to other OBDII codes but can occur due to key-related issues or immobilizer system malfunctions.

10. Can a damaged key fob cause the B2793 code to trigger in a Toyota?

Yes, a damaged or malfunctioning key fob can cause the B2793 code to trigger, as it may prevent the transponder chip from communicating properly with the vehicle's immobilizer system.