AutoCodes – Toyota – B1794 2016 Toyota RAV4

B1794 2016 Toyota RAV4 Code - Open In Occupant Classification ECU Battery Positive Line

Quick Answer

This circuit consists of the Occupant Classification ECU and the power source circuit (battery, fuse, wire harness). Common causes include Faulty Occupant Detection ECU, Occupant Detection ECU harness is open or shorted, Occupant Detection ECU 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: B1794 2016 Toyota RAV4 indicates Open In Occupant Classification ECU Battery Positive Line.
Common causes: Common causes include Faulty Occupant Detection ECU, Occupant Detection ECU harness is open or shorted, Occupant Detection ECU 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 276

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 20, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1794 2016 Toyota RAV4 Description

This circuit consists of the Occupant Classification ECU and the power source circuit (battery, fuse, wire harness). The Diagnostic Trouble Code (DTC) B1794 is recorded when a malfunction is detected in the Occupant Classification ECU or the power source circuit. When DTC B1794 is output after switching the ignition switch LOCK-ON-LOCK 50 times in a row when a malfunction occurs in the power circuit for the occupant classification system, the DTC is output again when a malfunction is detected even once after being cleared, unless the normal system code is input.

OBDII Code B1794 2016 Toyota RAV4 - Open In Occupant Classification ECU Battery Positive Line - AutoCodes.com — B1794 2016 Toyota RAV4 Code - Open In Occupant Classification ECU Battery Positive Line

What does this mean?

What are the Possible Causes of the DTC B1794 2016 Toyota RAV4?

Faulty Occupant Detection ECU
Occupant Detection ECU harness is open or shorted
Occupant Detection ECU circuit poor electrical connection

How to Fix the DTC B1794 2016 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 B1794 2016 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 B1794 2016 Toyota RAV4 code?

Need more information on how to fix the B1794 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1794 2016 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 B1794 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1794 in a 2016 Toyota RAV4?

The common symptoms of OBDII code B1794 in a 2016 Toyota RAV4 may include issues with the airbag system, such as the airbag warning light staying illuminated on the dashboard.

2. What does the OBDII code B1794 "Open In Occupant Classification ECU Battery Positive Line" mean in a 2016 Toyota RAV4?

The code B1794 indicates an open circuit in the Occupant Classification ECU's battery positive line, which can disrupt the proper functioning of the vehicle's airbag system.

3. What are the possible causes of OBDII code B1794 in a 2016 Toyota RAV4?

Possible causes of OBDII code B1794 in a 2016 Toyota RAV4 include damaged wiring, a faulty Occupant Classification ECU, loose connections, or issues with the vehicle's battery.

4. How can I diagnose OBDII code B1794 in my 2016 Toyota RAV4?

Diagnosing OBDII code B1794 in a 2016 Toyota RAV4 typically involves using a diagnostic scanner to retrieve the code, inspecting the wiring and connections related to the Occupant Classification ECU, and testing the components for faults.

5. Is it safe to drive my 2016 Toyota RAV4 with OBDII code B1794 present?

It is not recommended to drive your 2016 Toyota RAV4 with OBDII code B1794 present, as it indicates a potential issue with the airbag system that could affect its functionality in the event of a collision.

6. Can I repair OBDII code B1794 in my 2016 Toyota RAV4 myself?

Depending on your automotive repair skills, you may be able to repair OBDII code B1794 in your 2016 Toyota RAV4. However, it is advisable to consult a professional mechanic to ensure proper diagnosis and repair of the issue.

7. How much does it typically cost to fix OBDII code B1794 in a 2016 Toyota RAV4?

The cost of fixing OBDII code B1794 in a 2016 Toyota RAV4 can vary depending on the specific cause of the issue, the required parts, and labor charges. It is recommended to obtain quotes from reputable repair shops for an accurate estimate.

8. Are there any safety precautions I should take when dealing with OBDII code B1794 in my 2016 Toyota RAV4?

When dealing with OBDII code B1794 in your 2016 Toyota RAV4, it is important to disconnect the vehicle's battery and follow proper safety procedures outlined in the vehicle's service manual to avoid any potential electrical hazards.

9. Can OBDII code B1794 in a 2016 Toyota RAV4 cause the airbags to deploy unexpectedly?

OBDII code B1794 itself is unlikely to cause the airbags to deploy unexpectedly. However, it indicates a potential issue with the airbag system that could affect its deployment in the event of a collision, so it is crucial to address the problem promptly.

10. How long does it usually take to repair OBDII code B1794 in a 2016 Toyota RAV4?

The repair time for OBDII code B1794 in a 2016 Toyota RAV4 can vary depending on the exact cause of the issue and the complexity of the repair. It is advisable to consult a professional mechanic for an accurate assessment of the repair duration.