AutoCodes – Toyota – B1820 2016 Toyota RAV4

B1820 2016 Toyota RAV4 Code - Short in Side Squib Right Circuit

Quick Answer

The Front Side Squib Right (RH) circuit consists of the Center Airbag Sensor Assembly and Front Seat Airbag Assembly Right (RH). Common causes include Faulty Front Seat Airbag Assembly Right (RH) (Front Side Squib Right), Front Seat Airbag Assembly Right harness is open or shorted, Front Seat Airbag 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: B1820 2016 Toyota RAV4 indicates Short in Side Squib Right Circuit.
Common causes: Common causes include Faulty Front Seat Airbag Assembly Right (RH) (Front Side Squib Right), Front Seat Airbag Assembly Right harness is open or shorted, Front Seat Airbag 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 218

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 Nov 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1820 2016 Toyota RAV4 Description

The Front Side Squib Right (RH) circuit consists of the Center Airbag Sensor Assembly and Front Seat Airbag Assembly Right (RH). This circuit instructs the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is stored when a malfunction is detected in the front side squib RH circuit.

OBDII Code B1820 2016 Toyota RAV4 - Short in Side Squib Right Circuit - AutoCodes.com — B1820 2016 Toyota RAV4 Code - Short in Side Squib Right Circuit

What does this mean?

What are the Possible Causes of the DTC B1820 2016 Toyota RAV4?

Faulty Front Seat Airbag Assembly Right (RH) (Front Side Squib Right)
Front Seat Airbag Assembly Right harness is open or shorted
Front Seat Airbag Assembly Right circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1820 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 B1820 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 B1820 2016 Toyota RAV4 code?

Need more information on how to fix the B1820 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1820 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 B1820 2016 Toyota RAV4 Code

What does the OBDII code B1820 mean on a 2016 Toyota RAV4?

The B1820 code indicates a fault in the "Short in Side Squib Right Circuit," which refers to an issue with the right side airbag deployment circuit. This could be due to a short circuit, affecting the airbag's ability to deploy properly in the event of an accident.

What are common symptoms of the B1820 code in a 2016 Toyota RAV4?

Common symptoms include the airbag warning light illuminating on the dashboard and possibly the deactivation of the passenger side airbag. In some cases, there may be no noticeable symptoms other than the warning light.

What causes the B1820 code in a 2016 Toyota RAV4?

The B1820 code can be triggered by several issues, including a shorted wiring harness connected to the right side airbag, a faulty right side airbag squib, or problems with the airbag control module.

How do I diagnose the B1820 code on a 2016 Toyota RAV4?

Diagnosis should start with using an OBDII scanner to confirm the code. Inspect the wiring and connectors leading to the right side airbag for signs of damage, corrosion, or disconnection. If the wiring is intact, further testing of the airbag module and squib may be necessary, often requiring professional equipment and expertise.

What are the repair steps for fixing code B1820 in a 2016 Toyota RAV4?

Repair steps typically involve first disconnecting the battery to ensure safety. Then, inspect and repair any damaged wiring or connectors in the right side airbag circuit. If the issue lies with the airbag squib or module, replacement of the faulty component will be necessary.

Is it safe to drive my 2016 Toyota RAV4 with the B1820 code?

While the vehicle may operate normally, driving with an active B1820 code is not recommended as it involves the safety system. The right side airbag may not deploy in the event of a collision, posing increased risk of injury. It is advisable to address the issue as soon as possible.

Can I fix the B1820 code on my 2016 Toyota RAV4 myself?

If you are experienced with automotive repairs, particularly with airbag systems, you may be able to address simpler issues such as replacing connectors or repairing wiring. However, due to the complexity and safety concerns surrounding airbag systems, it is often recommended to seek professional assistance.

What tools are required to diagnose and repair the B1820 code in a 2016 Toyota RAV4?

Diagnosing and repairing the B1820 code requires an OBDII scanner, a multimeter, and basic hand tools. For repairing or replacing airbag system components, specialized knowledge and tools may be necessary, often making a professional service advisable.