AutoCodes – Toyota – B1650 2017 Toyota RAV4

B1650 2017 Toyota RAV4 Code - Occupant Classification System Malfunction

Quick Answer

The Occupant Classification System circuit consists of the Center Airbag Sensor Assembly and the Occupant Detection ECU. 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: B1650 2017 Toyota RAV4 indicates Occupant Classification System Malfunction.
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 771

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 B1650 2017 Toyota RAV4 Description

The Occupant Classification System circuit consists of the Center Airbag Sensor Assembly and the Occupant Detection ECU. If the Center Airbag Sensor Assembly receives signals from the Occupant Detection ECU, it determines whether the Front Passenger Airbag Assembly, the Front Seat Airbag Assembly Right, and the Front Seat Belt Assembly should be operated. The B1650 code is recorded when a malfunction is detected in the Occupant Classification System circuit.

OBDII Code B1650 2017 Toyota RAV4 - Occupant Classification System Malfunction - AutoCodes.com — B1650 2017 Toyota RAV4 Code - Occupant Classification System Malfunction

What does this mean?

What are the Possible Causes of the DTC B1650 2017 Toyota RAV4?

Faulty Occupant Detection ECU
Occupant Detection ECU harness is open or shorted
Occupant Detection ECU circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1650 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 B1650 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 B1650 2017 Toyota RAV4 code?

Need more information on how to fix the B1650 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1650 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 B1650 2017 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1650 in a 2017 Toyota RAV4?

The common symptoms of code B1650 in a 2017 Toyota RAV4 include the airbag warning light staying illuminated, the passenger airbag being disabled, and the seat belt warning light not functioning properly.

2. What is the primary cause of the Occupant Classification System Malfunction code B1650 in a 2017 Toyota RAV4?

The primary cause of code B1650 in a 2017 Toyota RAV4 is typically a malfunction within the occupant classification system, which is responsible for determining whether the passenger airbag should be activated based on the weight of the occupant.

3. How can I diagnose the source of OBDII code B1650 in my 2017 Toyota RAV4?

Diagnosing the source of code B1650 in a 2017 Toyota RAV4 usually involves using a diagnostic scan tool to retrieve the specific fault code, checking the wiring connections to the occupant classification system, and inspecting the seat sensors for any damage or malfunctions.

4. Can I continue driving my 2017 Toyota RAV4 with OBDII code B1650 present?

It is not recommended to continue driving your 2017 Toyota RAV4 with code B1650 present, as this indicates a malfunction in the occupant classification system, which could potentially result in the passenger airbag not deploying correctly in the event of an accident.

5. How can I repair OBDII code B1650 in my 2017 Toyota RAV4?

Repairing code B1650 in a 2017 Toyota RAV4 typically involves recalibrating or replacing the occupant classification system, checking and repairing any damaged wiring connections, and resetting the fault code using a diagnostic scan tool.

6. Are there any safety concerns associated with OBDII code B1650 in a 2017 Toyota RAV4?

Yes, there are safety concerns associated with code B1650 in a 2017 Toyota RAV4, as it indicates a malfunction in the occupant classification system, which could lead to the passenger airbag not deploying as intended in the event of a crash.

7. Can a DIY enthusiast fix OBDII code B1650 in a 2017 Toyota RAV4?

While some DIY enthusiasts may have the skills to diagnose and repair code B1650 in a 2017 Toyota RAV4, it is recommended to consult with a professional mechanic or dealership due to the safety implications of the issue.

8. How much does it cost to repair OBDII code B1650 in a 2017 Toyota RAV4?

The cost of repairing code B1650 in a 2017 Toyota RAV4 can vary depending on the specific issue causing the fault code, but it may involve recalibration or replacement of the occupant classification system, which could range from a few hundred to over a thousand dollars.

9. What are the long-term implications of ignoring OBDII code B1650 in a 2017 Toyota RAV4?

Ignoring code B1650 in a 2017 Toyota RAV4 could lead to potential safety risks in the event of an accident, as the passenger airbag may not deploy correctly due to the malfunction in the occupant classification system.

10. Is it possible to prevent OBDII code B1650 from occurring in a 2017 Toyota RAV4?

While some instances of code B1650 in a 2017 Toyota RAV4 may be due to unexpected malfunctions, regular maintenance and inspections of the occupant classification system can help prevent this issue from occurring.