AutoCodes – Toyota – B1790 2016 Toyota RAV4

B1790 2016 Toyota RAV4 Code - Center Airbag Sensor Assembly Communication Circuit Malfunction

Quick Answer

The Center Airbag Sensor Assembly Communication Circuit consists of the Occupant Detection ECU and the Center Airbag Sensor Assembly. 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: B1790 2016 Toyota RAV4 indicates Center Airbag Sensor Assembly Communication Circuit 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 397

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 B1790 2016 Toyota RAV4 Description

The Center Airbag Sensor Assembly Communication Circuit consists of the Occupant Detection ECU and the Center Airbag Sensor Assembly. The Diagnostic Trouble Code (DTC) B1790 is recorded when a malfunction is detected in the Center Airbag Sensor Assembly Communication Circuit.

OBDII Code B1790 2016 Toyota RAV4 - Center Airbag Sensor Assembly Communication Circuit Malfunction - AutoCodes.com — B1790 2016 Toyota RAV4 Code - Center Airbag Sensor Assembly Communication Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1790 2016 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 B1790 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 B1790 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 B1790 2016 Toyota RAV4 code?

Need more information on how to fix the B1790 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1790 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 B1790 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1790 in a 2016 Toyota RAV4?

- Common symptoms include the airbag warning light illuminating on the dashboard, potential loss of communication with the center airbag sensor assembly, and possible non-deployment of airbags in an accident.

2. What could cause the B1790 code (Center Airbag Sensor Assembly Communication Circuit Malfunction) in a 2016 Toyota RAV4?

- The B1790 code can be triggered by issues such as damaged wiring or connectors in the airbag system, a faulty center airbag sensor assembly, or problems with the airbag control module.

3. How can I diagnose the B1790 code in my 2016 Toyota RAV4?

- Diagnosing the B1790 code typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the wiring and connectors in the airbag system, and testing the center airbag sensor assembly for proper functionality.

4. Is it safe to drive my 2016 Toyota RAV4 with the B1790 code present?

- It is not recommended to drive the vehicle with the B1790 code active, as it indicates a potential malfunction in the airbag system, which could compromise occupant safety in the event of a collision.

5. How can I repair the B1790 code in my 2016 Toyota RAV4?

- Repairing the B1790 code involves addressing the underlying issue causing the communication circuit malfunction, which may include repairing or replacing damaged wiring, connectors, the center airbag sensor assembly, or the airbag control module.

6. Can I reset the B1790 code in my 2016 Toyota RAV4 by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is not a recommended method for resolving the underlying issue causing the B1790 code. It is best to diagnose and repair the root cause of the problem.

7. How much does it cost to fix the B1790 code in a 2016 Toyota RAV4?

- The cost of fixing the B1790 code can vary depending on the specific cause of the malfunction. Costs may include parts replacement, labor charges, and diagnostic fees, so it's advisable to consult a professional for an accurate estimate.

8. Can a DIY enthusiast repair the B1790 code in a 2016 Toyota RAV4?

- While some aspects of diagnosing and repairing the B1790 code may be within the capabilities of a skilled DIY enthusiast, working on the airbag system can be complex and dangerous. It is recommended to seek professional assistance for this type of repair.

9. Will the B1790 code cause the airbags to deploy unexpectedly in a 2016 Toyota RAV4?

- The B1790 code specifically relates to a communication circuit malfunction in the center airbag sensor assembly and is unlikely to cause the airbags to deploy unexpectedly. However, it may affect the proper deployment of airbags in a collision.

10. How long does it typically take to repair the B1790 code in a 2016 Toyota RAV4?

- The repair time for the B1790 code can vary depending on the specific cause of the issue and the complexity of the repair needed. It is advisable to consult with a qualified technician to get an accurate estimate of the repair duration.