AutoCodes – Toyota – B1794 2013 Toyota RAV4

B1794 2013 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 2013 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 403

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 2013 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 2013 Toyota RAV4 - Open In Occupant Classification ECU Battery Positive Line - AutoCodes.com — B1794 2013 Toyota RAV4 Code - Open In Occupant Classification ECU Battery Positive Line

What does this mean?

What are the Possible Causes of the DTC B1794 2013 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 2013 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 2013 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 2013 Toyota RAV4 code?

Need more information on how to fix the B1794 2013 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1794 2013 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 2013 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1794 in a 2013 Toyota RAV4?

The common symptoms of OBDII code B1794 in a 2013 Toyota RAV4 include issues with the airbag system, the airbag warning light staying illuminated, and potential non-deployment of the airbags in the event of a collision.

2. What does the OBDII code B1794 in a 2013 Toyota RAV4 mean?

OBDII code B1794 in a 2013 Toyota RAV4 indicates an "Open In Occupant Classification ECU Battery Positive Line" issue. This means there is a problem with the circuit related to the occupant classification system's battery positive line.

3. What are the possible causes of OBDII code B1794 in a 2013 Toyota RAV4?

Possible causes of OBDII code B1794 in a 2013 Toyota RAV4 include damaged wiring or connectors in the occupant classification system circuit, a faulty Occupant Classification ECU, or issues with the battery positive line.

4. How can I diagnose the Open In Occupant Classification ECU Battery Positive Line issue in a 2013 Toyota RAV4?

Diagnosing the B1794 code involves inspecting the wiring and connectors in the occupant classification system circuit, testing the Occupant Classification ECU, and checking the battery positive line for any faults or damage.

5. Can I repair OBDII code B1794 in a 2013 Toyota RAV4 on my own?

Repairing OBDII code B1794 in a 2013 Toyota RAV4 may require advanced diagnostic and repair skills due to the complexity of the occupant classification system. It is recommended to seek assistance from a qualified mechanic or dealership.

6. Is it safe to drive a 2013 Toyota RAV4 with the OBDII code B1794?

It is not recommended to drive a 2013 Toyota RAV4 with the OBDII code B1794, as this code indicates a potential issue with the airbag system, which could affect the safety of the vehicle occupants in the event of a collision.

7. How much does it cost to fix OBDII code B1794 in a 2013 Toyota RAV4?

The cost to fix OBDII code B1794 in a 2013 Toyota RAV4 can vary depending on the exact cause of the issue. Repairs may involve replacing wiring, connectors, or the Occupant Classification ECU, so it is advisable to get a professional diagnosis for an accurate cost estimate.

8. Can resetting the OBDII system clear the B1794 code in a 2013 Toyota RAV4?

Resetting the OBDII system may temporarily clear the B1794 code, but if the underlying issue causing the code is not addressed, the code is likely to reappear. It is essential to diagnose and fix the root cause of the problem.

9. How important is it to address OBDII code B1794 in a 2013 Toyota RAV4 promptly?

It is crucial to address OBDII code B1794 in a 2013 Toyota RAV4 promptly, as this code relates to the airbag system's functionality. Ignoring this issue could compromise the safety of the vehicle's occupants in the event of an accident.

10. Can a faulty Occupant Classification ECU cause the B1794 code in a 2013 Toyota RAV4?

Yes, a faulty Occupant Classification ECU is one of the possible causes of the B1794 code in a 2013 Toyota RAV4. If the ECU is not functioning correctly, it can lead to an open circuit in the occupant classification system, triggering the B1794 diagnostic trouble code.