B1820 Toyota 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 Toyota 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.
Code B1820 Toyota Description
What are the Possible Causes of the DTC B1820 Toyota?
- 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 Toyota?
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 Toyota 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 Toyota code?
Need more information on how to fix the B1820 Toyota code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1820 Toyota code diagnosed by a professional: Find a repair shop in your area
Information for Specific Toyota Models
- B1820 2013 Toyota RAV4 — Short in Side Squib Right Circuit
- B1820 2014 Toyota RAV4 — Short in Side Squib Right Circuit
- B1820 2015 Toyota RAV4 — Short in Side Squib Right Circuit
- B1820 2016 Toyota RAV4 — Short in Side Squib Right Circuit
- B1820 2017 Toyota RAV4 — Short in Side Squib Right Circuit
- B1820 2018 Toyota RAV4 — Short in Side Squib Right Circuit
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.
Frequently Asked Questions about B1820 Toyota Code
What does the OBDII code B1820 mean for a Toyota?
The code B1820 indicates a short circuit in the side squib right circuit, which is part of the airbag system on the passenger side.
What are the common symptoms of code B1820 in a Toyota?
Symptoms may include the airbag warning light illuminating on the dashboard and potential malfunction of the passenger-side airbag.
What causes the B1820 code in a Toyota?
Common causes include damaged wiring, shorted connectors, or a faulty side squib (airbag module) on the passenger side.
Is it safe to drive with the B1820 code on a Toyota?
No, it’s not safe since the airbag system may not function properly in the event of an accident, compromising passenger safety.
How can you diagnose the B1820 code on a Toyota?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the side squib right circuit wiring and connectors, and checking the airbag module for damage.
Can a damaged airbag module cause the B1820 code in a Toyota?
Yes, a damaged or malfunctioning passenger-side airbag module can trigger this code.
How can the B1820 code be repaired on a Toyota?
Repairs may include replacing damaged wiring, fixing or replacing connectors, or replacing the faulty airbag module.
Does the B1820 code require professional repair?
Yes, due to the complexity and importance of the airbag system, it’s recommended to have a professional handle repairs.
Will clearing the B1820 code fix the issue permanently?
No, clearing the code without addressing the underlying issue will likely result in the code returning.
Does the B1820 code affect other parts of the airbag system?
It specifically pertains to the passenger-side airbag circuit, but unresolved issues could potentially affect overall airbag functionality.
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