AutoCodes – Toyota – B2427 Toyota

B2427 Toyota 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 Toyota 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 4,214

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 Toyota 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 Toyota - CAN Communication Malfunction - AutoCodes.com — B2427 Toyota Code - CAN Communication Malfunction

What does this mean?

What are the Possible Causes of the DTC B2427 Toyota?

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

How to Fix the DTC B2427 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 B2427 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.

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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 Toyota Code

1. What are the common symptoms of OBDII code B2427 Toyota (CAN Communication Malfunction)?

- Common symptoms include issues with the vehicle's communication systems, such as malfunctioning dashboard displays, warning lights, and problems with electronic controls.

2. What can cause the OBDII code B2427 Toyota to trigger?

- The code may trigger due to damaged wiring, loose connections, faulty control modules, or issues with the Controller Area Network (CAN) communication network.

3. How can I diagnose the cause of the CAN Communication Malfunction (B2427) in a Toyota?

- Diagnosing the issue may involve using an OBDII scanner to read the code, inspecting wiring and connections for damage, checking control modules for faults, and verifying the integrity of the CAN network.

4. Are there any common repair tips for fixing OBDII code B2427 in a Toyota?

- Repair tips may include repairing or replacing damaged wiring, ensuring secure connections, resetting the code with a scanner, and addressing any underlying issues affecting the CAN communication network.

5. Can a DIY enthusiast fix the CAN Communication Malfunction (B2427) in a Toyota?

- Depending on the root cause of the issue, some DIY enthusiasts with knowledge of automotive electronics may be able to diagnose and repair the problem. However, complex electrical issues may require professional assistance.

6. Is it safe to continue driving with the OBDII code B2427 Toyota (CAN Communication Malfunction) present?

- It is not recommended to drive with the code active, as it can affect critical vehicle systems and lead to further damage. It is best to address the issue promptly to ensure safe operation.

7. How much does it typically cost to repair OBDII code B2427 Toyota in a professional repair shop?

- Repair costs can vary depending on the specific cause of the issue, but they may range from $100 to $500 or more, including diagnosis, parts, and labor.

8. Can extreme weather conditions or environmental factors trigger the CAN Communication Malfunction (B2427) in a Toyota?

- Yes, extreme weather conditions, water exposure, corrosion, or physical damage to wiring or components can contribute to the triggering of the B2427 code.

9. Will resetting the OBDII code B2427 Toyota make the issue go away permanently?

- Resetting the code may clear the immediate warning, but if the underlying issue causing the communication malfunction persists, the code is likely to reappear. It is essential to diagnose and address the root cause of the problem.

10. How long does it typically take to repair OBDII code B2427 Toyota in a repair shop?

- The repair time can vary depending on the complexity of the diagnosis and the extent of the repair needed. In general, it may take a few hours to a full day to diagnose and fix the issue.