AutoCodes – Toyota – B1788 2016 Toyota RAV4

B1788 2016 Toyota RAV4 Code - Rear Occupant Classification Sensor Right Collision Detection

Quick Answer

The Diagnostic Trouble Code (DTC) B1788 is output when the Occupant Detection ECU receives a collision detection signal sent by the Rear Occupant Classification Sensor Right (RH) when an accident occurs. Common causes include Faulty Separate Type Rear Seat Cushion Spring Assembly Right (Rear Occupant Classification Sensor Right), Separate Type Rear Seat Cushion Spring Assembly Right harness is open or shorted, Separate Type Rear Seat Cushion Spring Assembly Right 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: B1788 2016 Toyota RAV4 indicates Rear Occupant Classification Sensor Right Collision Detection.
Common causes: Common causes include Faulty Separate Type Rear Seat Cushion Spring Assembly Right (Rear Occupant Classification Sensor Right), Separate Type Rear Seat Cushion Spring Assembly Right harness is open or shorted, Separate Type Rear Seat Cushion Spring Assembly Right 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 252

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 B1788 2016 Toyota RAV4 Description

The Diagnostic Trouble Code (DTC) B1788 is output when the Occupant Detection ECU receives a collision detection signal sent by the Rear Occupant Classification Sensor Right (RH) when an accident occurs. DTC B1788 is also stored when the separate type of front seat cushion spring assembly is subjected to a strong impact, even if an actual accident has not occurred. However, when the Occupant Detection ECU outputs a collision detection signal, even if the vehicle is not in a collision, DTC B1788 can be cleared by performing the zero point calibration and sensitivity check. Therefore, when DTC B1788 is output, first perform the zero point calibration and sensitivity check.

OBDII Code B1788 2016 Toyota RAV4 - Rear Occupant Classification Sensor Right Collision Detection - AutoCodes.com — B1788 2016 Toyota RAV4 Code - Rear Occupant Classification Sensor Right Collision Detection

What does this mean?

What are the Possible Causes of the DTC B1788 2016 Toyota RAV4?

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

How to Fix the DTC B1788 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 B1788 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 B1788 2016 Toyota RAV4 code?

Need more information on how to fix the B1788 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1788 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 B1788 2016 Toyota RAV4 Code

1. What does OBDII code B1788 for the 2016 Toyota RAV4 indicate?

The code B1788 specifically relates to the Rear Occupant Classification Sensor Right Collision Detection in the 2016 Toyota RAV4.

2. What are the common symptoms of OBDII code B1788 in a 2016 Toyota RAV4?

Common symptoms of code B1788 may include the airbag warning light illuminating on the dashboard and potential issues with the right rear occupant classification sensor.

3. What are the possible causes of OBDII code B1788 in a 2016 Toyota RAV4?

Possible causes of code B1788 can include a faulty rear occupant classification sensor on the right side, damaged wiring or connectors, or issues with the airbag control module.

4. How can I diagnose OBDII code B1788 in my 2016 Toyota RAV4?

Diagnosing code B1788 typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the right rear occupant classification sensor and its connections, and checking for any visible damage.

5. Is it safe to drive my 2016 Toyota RAV4 with OBDII code B1788?

It is not recommended to drive your vehicle with an active airbag-related fault code like B1788, as it may affect the proper functioning of the airbag system in the event of a collision.

6. Can I reset OBDII code B1788 in my 2016 Toyota RAV4 on my own?

You can attempt to clear the fault code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from recurring.

7. How much does it typically cost to repair OBDII code B1788 in a 2016 Toyota RAV4?

The cost of repairing code B1788 can vary depending on the exact cause of the issue, but it may involve replacing the rear occupant classification sensor, repairing damaged wiring, or addressing other related components.

8. Are there any DIY tips for fixing OBDII code B1788 in a 2016 Toyota RAV4?

While some basic troubleshooting steps can be performed at home, it is recommended to seek professional help when dealing with airbag-related issues like code B1788 to ensure proper diagnosis and repair.

9. Will OBDII code B1788 cause my 2016 Toyota RAV4 to fail an emissions test?

Code B1788 is related to the airbag system and is not directly linked to emissions, so it should not cause your vehicle to fail an emissions test.

10. How can I prevent OBDII code B1788 from occurring in my 2016 Toyota RAV4 in the future?

Regular maintenance and inspections of the airbag system, including the rear occupant classification sensor, can help prevent issues like code B1788 from occurring.