AutoCodes – Scion – B1782 Scion

B1782 Scion Code - Rear Occupant Classification Sensor Left Circuit Malfunction

Quick Answer

The Rear Occupant Classification Sensor Left (LH) circuit consists of the Occupant Detection ECU and the Rear Occupant Classification Sensor Left. Common causes include Faulty Separate Type Rear Seat Cushion Spring Assembly Left (Rear Occupant Classification Sensor Left), Separate Type Rear Seat Cushion Spring Assembly Left harness is open or shorted, Separate Type Rear Seat Cushion Spring Assembly 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: B1782 Scion indicates Rear Occupant Classification Sensor Left Circuit Malfunction.
Common causes: Common causes include Faulty Separate Type Rear Seat Cushion Spring Assembly Left (Rear Occupant Classification Sensor Left), Separate Type Rear Seat Cushion Spring Assembly Left harness is open or shorted, Separate Type Rear Seat Cushion Spring Assembly 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 891

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 B1782 Scion Description

The Rear Occupant Classification Sensor Left (LH) circuit consists of the Occupant Detection ECU and the Rear Occupant Classification Sensor Left. The Diagnostic Trouble Code (DTC) B1782 is recorded when a malfunction is detected in the Rear Occupant Classification Sensor Left circuit.

OBDII Code B1782 Scion - Rear Occupant Classification Sensor Left Circuit Malfunction - AutoCodes.com — B1782 Scion Code - Rear Occupant Classification Sensor Left Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1782 Scion?

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

How to Fix the DTC B1782 Scion?

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 B1782 Scion 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 B1782 Scion code?

Need more information on how to fix the B1782 Scion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1782 Scion 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 B1782 Scion Code

1. What are the common symptoms of OBDII code B1782 in a Scion related to the Rear Occupant Classification Sensor Left Circuit Malfunction?

The common symptoms include the airbag warning light staying illuminated on the dashboard and the potential deactivation of the passenger-side airbag.

2. What can cause the Rear Occupant Classification Sensor Left Circuit Malfunction in a Scion triggering OBDII code B1782?

Possible causes include a faulty rear occupant classification sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the airbag control module.

3. How serious is the OBDII code B1782 related to the Rear Occupant Classification Sensor Left Circuit Malfunction in a Scion?

This code is considered serious as it affects the proper functioning of the passenger-side airbag system, potentially compromising occupant safety in the event of a collision.

4. Can I continue driving my Scion with the OBDII code B1782 for the Rear Occupant Classification Sensor Left Circuit Malfunction?

It is not recommended to drive the vehicle with this code active, as the passenger-side airbag may not deploy as intended in the event of an accident.

5. What steps can I take to repair the Rear Occupant Classification Sensor Left Circuit Malfunction triggering OBDII code B1782 in my Scion?

First, have the vehicle diagnosed by a professional to pinpoint the exact cause. Repair may involve replacing the rear occupant classification sensor, repairing damaged wiring, or addressing issues with the airbag control module.

6. Is it possible to reset the OBDII code B1782 related to the Rear Occupant Classification Sensor Left Circuit Malfunction in a Scion without fixing the underlying issue?

While clearing the code with an OBDII scanner may temporarily turn off the warning light, the issue will likely persist until the root cause is addressed, and the code may reappear.

7. How can I prevent the recurrence of OBDII code B1782 in my Scion due to the Rear Occupant Classification Sensor Left Circuit Malfunction?

Regularly inspect and maintain the airbag system components, including the rear occupant classification sensor, to ensure they are in good working condition. Address any warning lights promptly.

8. Are there any safety precautions I should take if the OBDII code B1782 for the Rear Occupant Classification Sensor Left Circuit Malfunction is present in my Scion?

Exercise caution while driving, especially with passengers, as the passenger-side airbag may not deploy correctly in the event of a collision. Seek professional repair assistance promptly.

9. Can a DIY enthusiast with automotive knowledge fix the OBDII code B1782 related to the Rear Occupant Classification Sensor Left Circuit Malfunction in a Scion?

While some DIYers may have the skills to diagnose and repair this issue, it is recommended to consult with a professional technician due to the critical nature of the airbag system and the importance of proper repairs.

10. How long does it typically take to repair the OBDII code B1782 linked to the Rear Occupant Classification Sensor Left Circuit Malfunction in a Scion?

The repair time can vary based on the specific cause of the issue. It may take anywhere from a few hours to a day, depending on the complexity of the repair needed and the availability of parts.