AutoCodes – Toyota – B1656 Toyota

B1656 Toyota Code - Seat Belt Buckle Switch Left Circuit Malfunction

Quick Answer

The Seat Belt Buckle Switch Left circuit consists of the Center Airbag Sensor and the Front Seat Inner Belt Left (LH). Common causes include Faulty Front Seat Inner Belt Left (LH), Front Seat Inner Belt Left harness is open or shorted, Front Seat Inner Belt Left 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: B1656 Toyota indicates Seat Belt Buckle Switch Left Circuit Malfunction .
Common causes: Common causes include Faulty Front Seat Inner Belt Left (LH), Front Seat Inner Belt Left harness is open or shorted, Front Seat Inner Belt Left 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 11,762

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 Oct 11, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1656 Toyota Description

The Seat Belt Buckle Switch Left circuit consists of the Center Airbag Sensor and the Front Seat Inner Belt Left (LH). The Diagnostic Trouble Code (DTC) B1655 is recorded when a malfunction is detected in the Seat Belt Buckle Switch Left.

OBDII Code B1656 Toyota - Seat Belt Buckle Switch Left Circuit Malfunction - AutoCodes.com — B1656 Toyota Code - Seat Belt Buckle Switch Left Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1656 Toyota?

Faulty Front Seat Inner Belt Left (LH)
Front Seat Inner Belt Left harness is open or shorted
Front Seat Inner Belt Left circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1656 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 B1656 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 B1656 Toyota code?

Need more information on how to fix the B1656 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1656 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

B1656 2013 Toyota RAV4 — Seat Belt Buckle Switch Left Circuit Malfunction
B1656 2014 Toyota RAV4 — Seat Belt Buckle Switch Left Circuit Malfunction
B1656 2015 Toyota RAV4 — Seat Belt Buckle Switch Left Circuit Malfunction
B1656 2016 Toyota RAV4 — Seat Belt Buckle Switch Left Circuit Malfunction
B1656 2017 Toyota RAV4 — Seat Belt Buckle Switch Left Circuit Malfunction
B1656 2018 Toyota RAV4 — Seat Belt Buckle Switch Left Circuit Malfunction

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1656 Toyota Code

1. What are the common symptoms of OBDII code B1656 Toyota (Seat Belt Buckle Switch Left Circuit Malfunction)?

The common symptoms include the airbag warning light being illuminated on the dashboard, the airbag system failing to deploy in a collision, and potential issues with the seat belt buckle.

2. What are the possible causes of OBDII code B1656 Toyota?

The code B1656 is typically triggered by a malfunction in the seat belt buckle switch left circuit, which could be due to a faulty seat belt buckle switch, damaged wiring, or poor electrical connections.

3. How can I diagnose the OBDII code B1656 Toyota issue?

Diagnosing the B1656 code involves using an OBDII scanner to retrieve the specific fault code, inspecting the seat belt buckle and its connections for any visible damage, and testing the circuitry for continuity.

4. Can I repair the B1656 code issue myself?

Repairing the B1656 code may require replacing the faulty seat belt buckle switch, repairing any damaged wiring, or fixing poor electrical connections. If you have the necessary tools and expertise, you may be able to address the issue yourself.

5. Is it safe to drive with OBDII code B1656 Toyota active?

It is not recommended to drive with the B1656 code active, as it indicates a potential problem with the seat belt buckle switch that could compromise the proper functioning of the airbag system in the event of a collision.

6. How much does it cost to repair OBDII code B1656 Toyota?

The cost of repairing the B1656 code can vary depending on the extent of the issue, the specific repairs needed, and the labor rates of the mechanic. It is advisable to get a few quotes from different repair shops to compare prices.

7. Can resetting the OBDII code B1656 Toyota resolve the issue?

While resetting the code may temporarily turn off the warning light, it will not fix the underlying problem causing the B1656 code. It is important to diagnose and repair the issue to ensure the proper functioning of the airbag system.

8. Will OBDII code B1656 Toyota affect the vehicle's emissions or performance?

The B1656 code is related to the airbag system and does not directly impact the vehicle's emissions or performance. However, it is crucial to address any airbag-related issues promptly for safety reasons.

9. How long does it take to repair OBDII code B1656 Toyota?

The repair time for the B1656 code can vary depending on the complexity of the issue, the availability of parts, and the expertise of the mechanic. In some cases, it may be a relatively quick fix, while more extensive repairs could take longer.

10. Can I prevent OBDII code B1656 Toyota from occurring in the future?

Regularly inspecting the seat belt buckle and its connections for any signs of wear or damage, ensuring proper seat belt use, and addressing any airbag system warning lights promptly can help prevent the recurrence of the B1656 code.