AutoCodes – Generic – B1820

B1820 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 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 9,058

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

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 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 - Short in Side Squib Right Circuit - AutoCodes.com — B1820 Code - Short in Side Squib Right Circuit

What does this mean?

What are the Possible Causes of the DTC B1820?

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?

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 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 code?

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

Need Help with the Code?

Get the B1820 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1820 Buick — Driver Seat Recline Rearward Switch Circuit
B1820 Cadillac — Driver Seat Recline Rearward Switch Circuit
B1820 Chevrolet — Driver Seat Recline Rearward Switch Circuit
B1820 Chrysler — Hood Ajar Input Circuit High
B1820 Dodge — Hood Ajar Input Circuit High
B1820 GMC — Driver Seat Recline Rearward Switch Circuit
B1820 Jeep — Hood Ajar Input Circuit High
B1820 Lexus — Short in Side Squib Right Circuit
B1820 RAM — Hood Ajar Input Circuit High
B1820 Scion — Short in Side Squib Right Circuit
B1820 Toyota — 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.

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 Code

1. What are the common symptoms of OBDII code B1820 (Short in Side Squib Right Circuit)?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the airbag system deploying in case of an accident.

2. What are the possible causes of OBDII code B1820 (Short in Side Squib Right Circuit)?

- The code can be triggered by a short circuit in the side squib right circuit, faulty wiring or connectors, or a malfunctioning airbag module.

3. How serious is OBDII code B1820 (Short in Side Squib Right Circuit)?

- This code indicates a problem with the airbag system, which is a critical safety feature in the vehicle. It is important to address this issue promptly to ensure the airbags function correctly in an accident.

4. How can I diagnose OBDII code B1820 (Short in Side Squib Right Circuit)?

- Diagnosing this code typically involves using a scan tool to retrieve the specific fault code, inspecting the wiring and connectors in the side squib right circuit, and testing the airbag module for proper functionality.

5. Can I drive my vehicle with OBDII code B1820 (Short in Side Squib Right Circuit) present?

- It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the airbag system. Driving with a malfunctioning airbag system can compromise safety in the event of a collision.

6. How can I repair OBDII code B1820 (Short in Side Squib Right Circuit)?

- Repairing this code may involve addressing the specific cause, such as repairing or replacing damaged wiring, connectors, or the airbag module. It is advisable to seek assistance from a qualified technician for proper diagnosis and repair.

7. Is it possible to reset OBDII code B1820 (Short in Side Squib Right Circuit) without fixing the underlying issue?

- While clearing the fault code may temporarily turn off the warning light, the underlying issue causing the code will persist. It is essential to address the root cause of the problem to ensure proper functioning of the airbag system.

8. Can extreme temperatures affect OBDII code B1820 (Short in Side Squib Right Circuit)?

- Extreme temperatures can potentially worsen existing wiring or connector issues, leading to the triggering of this fault code. It is important to keep the vehicle in a suitable environment to prevent further damage.

9. How long does it take to repair OBDII code B1820 (Short in Side Squib Right Circuit)?

- The repair time for this code can vary depending on the specific cause of the issue and the extent of the repairs needed. It is recommended to consult with a professional technician for an accurate assessment of repair time.

10. Are there any recalls related to OBDII code B1820 (Short in Side Squib Right Circuit)?

- It is advisable to check with the vehicle manufacturer or a local dealership to inquire about any recalls related to this specific fault code. Recalls may exist for certain vehicles with known airbag system issues.