AutoCodes – Toyota – B1790 2018 Toyota RAV4

B1790 2018 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 2018 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 256

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 2018 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 2018 Toyota RAV4 - Center Airbag Sensor Assembly Communication Circuit Malfunction - AutoCodes.com — B1790 2018 Toyota RAV4 Code - Center Airbag Sensor Assembly Communication Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B1790 2018 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 2018 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 2018 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 2018 Toyota RAV4 code?

Need more information on how to fix the B1790 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1790 2018 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 2018 Toyota RAV4 Code

1. What are common symptoms of OBDII code B1790 in a 2018 Toyota RAV4?

The common symptoms of OBDII code B1790 in a 2018 Toyota RAV4 include the airbag warning light illuminating on the dashboard and potential issues with the center airbag system.

2. What causes the OBDII code B1790 in a 2018 Toyota RAV4?

The OBDII code B1790 in a 2018 Toyota RAV4 is typically caused by a malfunction in the center airbag sensor assembly communication circuit.

3. How serious is the OBDII code B1790 in a 2018 Toyota RAV4?

The OBDII code B1790 indicates a malfunction in the center airbag sensor assembly communication circuit, which can affect the proper functioning of the airbag system. It is important to address this issue promptly for safety reasons.

4. Can I still drive my 2018 Toyota RAV4 with the OBDII code B1790 active?

It is not recommended to drive your 2018 Toyota RAV4 with the OBDII code B1790 active, as it indicates a malfunction in the center airbag sensor assembly communication circuit, which may compromise the effectiveness of the airbag system in case of an accident.

5. How can I diagnose and repair the OBDII code B1790 in my 2018 Toyota RAV4?

Diagnosing and repairing the OBDII code B1790 in a 2018 Toyota RAV4 typically involves checking the wiring and connections in the center airbag sensor assembly communication circuit, repairing any damaged components, and resetting the fault code with a diagnostic tool.

6. Is it safe to reset the OBDII code B1790 in a 2018 Toyota RAV4 without fixing the underlying issue?

Resetting the OBDII code B1790 without fixing the underlying issue may temporarily turn off the warning light, but it will not address the root cause of the problem, potentially leaving the airbag system compromised. It is recommended to diagnose and repair the issue properly.

7. Can a DIY enthusiast fix the OBDII code B1790 in a 2018 Toyota RAV4?

While some DIY enthusiasts may have the skills to diagnose and repair the OBDII code B1790 in a 2018 Toyota RAV4, dealing with airbag systems can be complex and risky. It is recommended to seek professional help for this particular issue.

8. How much does it cost to repair the OBDII code B1790 in a 2018 Toyota RAV4?

The cost of repairing the OBDII code B1790 in a 2018 Toyota RAV4 can vary depending on the extent of the damage and the labor rates of the repair shop. It is advisable to get a diagnosis and estimate from a certified mechanic.

9. Will fixing the OBDII code B1790 in a 2018 Toyota RAV4 require replacing parts?

Fixing the OBDII code B1790 in a 2018 Toyota RAV4 may require replacing damaged components in the center airbag sensor assembly communication circuit, such as wiring harnesses or sensors, depending on the diagnosis.

10. How can I prevent the OBDII code B1790 from reoccurring in my 2018 Toyota RAV4?

To prevent the OBDII code B1790 from reoccurring in your 2018 Toyota RAV4, it is essential to ensure regular maintenance of the airbag system, including checking for loose connections, damaged wiring, and other potential issues that may lead to circuit malfunctions.