AutoCodes – Toyota – B1788 2015 Toyota RAV4

B1788 2015 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 2015 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 216

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 2015 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 2015 Toyota RAV4 - Rear Occupant Classification Sensor Right Collision Detection - AutoCodes.com — B1788 2015 Toyota RAV4 Code - Rear Occupant Classification Sensor Right Collision Detection

What does this mean?

What are the Possible Causes of the DTC B1788 2015 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 2015 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 2015 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 2015 Toyota RAV4 code?

Need more information on how to fix the B1788 2015 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1788 2015 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 2015 Toyota RAV4 Code

1. What does OBDII code B1788 in a 2015 Toyota RAV4 indicate?

The B1788 code specifically relates to the Rear Occupant Classification Sensor Right Collision Detection system in the vehicle.

2. What are the common symptoms associated with OBDII code B1788 in a 2015 Toyota RAV4?

Common symptoms include the airbag warning light being illuminated on the dashboard and potential issues with the passenger airbag system.

3. What are the possible causes of OBDII code B1788 in a 2015 Toyota RAV4?

Potential causes of the B1788 code may include a malfunctioning rear occupant classification sensor on the right side, wiring issues, or a faulty airbag control module.

4. How can I diagnose the source of OBDII code B1788 in my 2015 Toyota RAV4?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault codes, followed by inspecting the rear occupant classification sensor and related wiring for any visible damage.

5. Can I continue driving my 2015 Toyota RAV4 with OBDII code B1788 present?

It is not recommended to drive the vehicle with the B1788 code active, as it may indicate potential problems with the passenger airbag system, which could affect safety in the event of a collision.

6. What are the repair options for fixing OBDII code B1788 in a 2015 Toyota RAV4?

Repair options may include replacing the faulty rear occupant classification sensor, repairing damaged wiring, or resetting the airbag control module after addressing the underlying issue.

7. Is it possible to reset the OBDII code B1788 in a 2015 Toyota RAV4 without fixing the root cause?

While it may be possible to clear the code temporarily, it is crucial to address the root cause of the issue to ensure the proper functioning of the passenger airbag system.

8. How much does it typically cost to repair OBDII code B1788 in a 2015 Toyota RAV4?

The cost of repair can vary depending on the specific issue, but it may involve parts and labor expenses for sensor replacement, wiring repairs, or module reprogramming.

9. Are there any recalls or technical service bulletins related to OBDII code B1788 in the 2015 Toyota RAV4?

It is advisable to check with Toyota dealerships or official sources to see if there are any related recalls or technical service bulletins addressing the B1788 code in the 2015 RAV4.

10. How can I prevent OBDII code B1788 from occurring in my 2015 Toyota RAV4?

To prevent the B1788 code, it is essential to perform regular vehicle maintenance, address any airbag system warnings promptly, and follow manufacturer-recommended service intervals.