AutoCodes – Toyota – B1793 2017 Toyota RAV4

B1793 2017 Toyota RAV4 Code - Occupant Classification Sensor Power Supply Circuit Malfunction

Quick Answer

The Occupant Classification Sensor power supply circuit consists of the Occupant Detection ECU and the occupant classification sensors. Common causes include Faulty Separate Type Front Seat Cushion Spring Assembly (Occupant Classification Sensors), Separate Type Front Seat Cushion Spring Assembly harness is open or shorted, Separate Type Front Seat Cushion Spring Assembly 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: B1793 2017 Toyota RAV4 indicates Occupant Classification Sensor Power Supply Circuit Malfunction.
Common causes: Common causes include Faulty Separate Type Front Seat Cushion Spring Assembly (Occupant Classification Sensors), Separate Type Front Seat Cushion Spring Assembly harness is open or shorted, Separate Type Front Seat Cushion Spring Assembly 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 1,508

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1793 2017 Toyota RAV4 Description

The Occupant Classification Sensor power supply circuit consists of the Occupant Detection ECU and the occupant classification sensors. The Diagnostic Trouble Code (DTC) B1793 is recorded when a malfunction is detected in the Occupant Classification Sensor Power Supply Circuit.

OBDII Code B1793 2017 Toyota RAV4 - Occupant Classification Sensor Power Supply Circuit Malfunction - AutoCodes.com — B1793 2017 Toyota RAV4 Code - Occupant Classification Sensor Power Supply Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1793 2017 Toyota RAV4?

Faulty Separate Type Front Seat Cushion Spring Assembly (Occupant Classification Sensors)
Separate Type Front Seat Cushion Spring Assembly harness is open or shorted
Separate Type Front Seat Cushion Spring Assembly circuit poor electrical connection
Faulty Occupant Detection ECU

How to Fix the DTC B1793 2017 Toyota RAV4?

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 B1793 2017 Toyota RAV4 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 B1793 2017 Toyota RAV4 code?

Need more information on how to fix the B1793 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1793 2017 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

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 B1793 2017 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1793 in a 2017 Toyota RAV4?

- Common symptoms include the airbag warning light illuminating on the dashboard, the passenger airbag being disabled, and potential issues with the seatbelt warning system.

2. What could cause the OBDII code B1793 (Occupant Classification Sensor Power Supply Circuit Malfunction) in a 2017 Toyota RAV4?

- Possible causes include a faulty occupant classification sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the power supply to the sensor.

3. How can I diagnose the issue related to code B1793 in my 2017 Toyota RAV4?

- Diagnosis usually involves using a professional OBDII scanner to retrieve the specific error code, inspecting the occupant classification sensor and related wiring for damage, and testing the power supply circuit for proper voltage.

4. Can I continue driving my 2017 Toyota RAV4 with the B1793 code present?

- It is not recommended to drive the vehicle with the B1793 code active, as it indicates a potential issue with the occupant classification sensor that could affect the proper function of the airbag system in the event of a collision.

5. How can I reset the OBDII code B1793 in my 2017 Toyota RAV4?

- Resetting the code typically involves fixing the underlying issue causing the malfunction, such as repairing or replacing the occupant classification sensor, and then using an OBDII scanner to clear the error code.

6. Are there any safety concerns associated with the B1793 code in a 2017 Toyota RAV4?

- Yes, there are safety concerns as the code indicates a malfunction in the occupant classification sensor, which could lead to improper airbag deployment or disablement in the event of an accident.

7. Is it possible to repair the occupant classification sensor power supply circuit malfunction in a 2017 Toyota RAV4 at home?

- While some basic troubleshooting like checking for loose connections or damaged wiring can be done at home, repairing or replacing the sensor itself may require specialized tools and expertise best handled by a professional mechanic.

8. How much does it cost to fix the B1793 code in a 2017 Toyota RAV4?

- The cost of fixing the B1793 code can vary depending on the specific issue causing the malfunction, the required parts, and labor costs. It's recommended to get a diagnostic from a mechanic for an accurate estimate.

9. Can a DIY enthusiast with limited experience tackle the repair related to the B1793 code in a 2017 Toyota RAV4?

- While some simple troubleshooting steps can be attempted by DIY enthusiasts, dealing with the intricacies of the occupant classification sensor and its circuit may require specialized knowledge and tools best left to experienced professionals.

10. Will the B1793 code in a 2017 Toyota RAV4 affect the vehicle's overall performance?

- While the B1793 code itself may not directly impact the vehicle's performance, it is crucial for the proper functioning of the airbag system, which is a critical safety feature.