AutoCodes – Toyota – B2795 Toyota

B2795 Toyota Code - Unmatched Key Code

Quick Answer

This Diagnostic Trouble Code (DTC) is output when a key with a key code that has not been registered in the ECU or with a different vehicle serial number is inserted into the ignition key cylinder. Common causes include Faulty Key, 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: B2795 Toyota indicates Unmatched Key Code.
Common causes: Common causes include Faulty Key, 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 42,907

How popular is this code, among other codes? Medium

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 B2795 Toyota Description

This Diagnostic Trouble Code (DTC) is output when a key with a key code that has not been registered in the ECU or with a different vehicle serial number is inserted into the ignition key cylinder.

OBDII Code B2795 Toyota - Unmatched Key Code - AutoCodes.com — B2795 Toyota Code - Unmatched Key Code

What does this mean?

What are the Possible Causes of the DTC B2795 Toyota?

Faulty Key
Faulty Transponder Key ECU Assembly

How to Fix the DTC B2795 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 B2795 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 B2795 Toyota code?

Need more information on how to fix the B2795 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2795 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

B2795 2013 Toyota RAV4 — Unmatched Key Code
B2795 2014 Toyota RAV4 — Unmatched Key Code
B2795 2015 Toyota RAV4 — Unmatched Key Code
B2795 2016 Toyota RAV4 — Unmatched Key Code
B2795 2017 Toyota RAV4 — Unmatched Key Code
B2795 2018 Toyota RAV4 — Unmatched Key Code

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 B2795 Toyota Code

1. What does the OBDII code B2795 mean on a Toyota?

The B2795 code indicates an "Unmatched Key Code," meaning the vehicle's immobilizer system does not recognize the key being used.

2. What are the common symptoms of the B2795 code in a Toyota?

Symptoms include the engine not starting, the security light flashing, or the vehicle going into theft deterrent mode.

3. What causes the B2795 code to trigger in a Toyota?

Common causes include a damaged or unprogrammed key, a faulty transponder chip, issues with the immobilizer system, or wiring/connectivity problems.

4. Can a dead key fob battery cause the B2795 code?

No, a dead key fob battery does not directly trigger this code, but it can prevent the car from recognizing the key if the fob is not transmitting a signal.

5. How can I fix the B2795 code on my Toyota?

You may need to reprogram the key, replace a faulty key, inspect the immobilizer system, or repair damaged wiring. Contact a professional if unsure.

6. Can I clear the B2795 code without fixing the issue?

Clearing the code temporarily may be possible, but the code will return if the underlying issue is not resolved.

7. Do I need to replace my key if I get a B2795 code?

Not always. The key may only require reprogramming. A professional diagnosis is recommended to determine if the key or another component is faulty.

8. Is it safe to drive with the B2795 code?

You likely wonâ€™t be able to drive because the engine will not start due to the immobilizer system's activation.

9. Can a weak car battery trigger the B2795 code?

A weak or failing car battery can cause communication issues, potentially leading to this code. Check the battery as part of the diagnosis.

10. Do I need a dealer to fix the B2795 code on my Toyota?

While a dealer can fix the issue, many independent locksmiths or mechanics with the right tools can also reprogram keys and diagnose immobilizer problems.