AutoCodes – Lexus – B2427 Lexus

B2427 Lexus Code - CAN Communication Malfunction

Quick Answer

The Diagnostic Trouble Code (DTC) code sets when the Adaptive Front-lighting System (AFS) ECU receives an engine running status signal and shift position signal from the ECM using CAN communication. Common causes include Faulty CAN Communication Malfunction, Faulty Adaptive Front-lighting System (AFS). 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: B2427 Lexus indicates CAN Communication Malfunction.
Common causes: Common causes include Faulty CAN Communication Malfunction, Faulty Adaptive Front-lighting System (AFS).
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 4,860

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 Dec 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2427 Lexus Description

The Diagnostic Trouble Code (DTC) code sets when the Adaptive Front-lighting System (AFS) ECU receives an engine running status signal and shift position signal from the ECM using CAN communication.

OBDII Code B2427 Lexus - CAN Communication Malfunction - AutoCodes.com — B2427 Lexus Code - CAN Communication Malfunction

What does this mean?

What are the Possible Causes of the DTC B2427 Lexus?

Faulty CAN Communication Malfunction
Faulty Adaptive Front-lighting System (AFS)

How to Fix the DTC B2427 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 B2427 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.

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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 B2427 Lexus Code

1. What are the common symptoms of OBDII code B2427 in a Lexus related to CAN communication malfunction?

Common symptoms include issues with the vehicle's communication systems, such as intermittent or complete loss of communication with various control modules.

2. What are some potential causes of OBDII code B2427 in a Lexus?

Possible causes include damaged wiring or connectors in the CAN communication network, faulty control modules, or a problem with the vehicle's main computer.

3. How can I diagnose the source of the CAN communication malfunction causing OBDII code B2427 in my Lexus?

Diagnosing this issue typically involves inspecting the wiring harness, connectors, and control modules for any visible damage, as well as using a diagnostic scanner to pinpoint the exact location of the communication fault.

4. Is it safe to continue driving my Lexus with OBDII code B2427 indicating a CAN communication malfunction?

It is not recommended to drive the vehicle with this code present, as it can lead to further communication failures between critical systems in the car.

5. What are some repair tips for resolving OBDII code B2427 in a Lexus?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing faulty control modules, and ensuring proper communication network functionality through thorough testing.

6. Can a DIY enthusiast fix OBDII code B2427 related to CAN communication malfunction in a Lexus?

While some basic checks and repairs may be possible for DIY enthusiasts, diagnosing and repairing complex communication issues may require specialized tools and expertise best handled by a professional technician.

7. How much does it cost to repair OBDII code B2427 in a Lexus caused by CAN communication malfunction?

Repair costs can vary depending on the extent of the issue, parts needed for replacement, and labor rates at a repair shop. It's advisable to get a few quotes from different mechanics to compare.

8. Will resetting the OBDII code B2427 in a Lexus solve the CAN communication malfunction issue?

Simply resetting the code may temporarily clear the warning light, but it will not address the underlying problem causing the communication malfunction. Proper diagnosis and repair are necessary for a lasting solution.

9. Can extreme weather conditions affect the occurrence of OBDII code B2427 in a Lexus due to CAN communication malfunction?

Extreme temperatures or moisture can potentially exacerbate existing communication issues in the vehicle's network, leading to the triggering of the B2427 code. It's essential to address any underlying faults promptly.

10. How long does it typically take to repair OBDII code B2427 related to CAN communication malfunction in a Lexus?

The repair time can vary based on the complexity of the issue, availability of parts, and the technician's experience. In some cases, it may be resolved within a few hours, while more intricate problems could take longer to diagnose and fix.