AutoCodesToyota – B1790 2014 Toyota RAV4

B1790 2014 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 2014 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 232
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 16, 2022
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Code B1790 2014 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 2014 Toyota RAV4 - Center Airbag Sensor Assembly Communication Circuit Malfunction - AutoCodes.com
B1790 2014 Toyota RAV4 Code - Center Airbag Sensor Assembly Communication Circuit Malfunction

What are the Possible Causes of the DTC B1790 2014 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 2014 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 2014 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 2014 Toyota RAV4 code?

Need more information on how to fix the B1790 2014 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1790 2014 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 2014 Toyota RAV4 Code

1. What does the OBDII code B1790 on a 2014 Toyota RAV4 indicate?

The B1790 code specifically points to a Center Airbag Sensor Assembly Communication Circuit Malfunction in the vehicle.

2. What are the common symptoms of a B1790 error in a 2014 Toyota RAV4?

Common symptoms may include the airbag warning light staying illuminated on the dashboard or issues with the airbag system's functionality.

3. What are the potential causes of the B1790 code in a 2014 Toyota RAV4?

The B1790 code can be triggered by issues such as damaged wiring, a faulty center airbag sensor assembly, or a poor connection in the communication circuit.

4. How can I diagnose the B1790 code in my 2014 Toyota RAV4?

To diagnose the B1790 code, you may need to perform a thorough inspection of the airbag system components, check for damaged wiring, and use a diagnostic scanner to retrieve specific fault codes.

5. Can I continue driving my 2014 Toyota RAV4 with a B1790 error code?

It is not recommended to drive the vehicle with an active airbag system malfunction as it could compromise the safety of the occupants in the event of a collision.

6. How can I repair a B1790 code in my 2014 Toyota RAV4?

Repairing a B1790 code may involve fixing any damaged wiring, replacing the faulty center airbag sensor assembly, or addressing any connectivity issues within the communication circuit.

7. Is it possible to reset the B1790 code in a 2014 Toyota RAV4 without fixing the underlying issue?

While you can clear the error code with a diagnostic scanner, it is crucial to address the root cause of the problem to ensure the airbag system functions correctly.

8. Are there any safety precautions to consider when working on the airbag system related to a B1790 code?

Yes, when working on the airbag system, always disconnect the battery, wait for a specified time, and handle airbag components with care to prevent accidental deployment.

9. Can a DIY enthusiast fix a B1790 error in a 2014 Toyota RAV4, or is professional help recommended?

While some may attempt DIY repairs, dealing with airbag systems can be complex and dangerous, so it is often best to seek professional assistance for proper diagnosis and repair.

10. How much can I expect to pay for repairing a B1790 code in a 2014 Toyota RAV4 at a dealership or auto repair shop?

The cost of repairing a B1790 code can vary based on the extent of the issue, but expect to pay for diagnostic time, parts, and labor, which can range from a few hundred to over a thousand dollars.

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