AutoCodes – Toyota – B1902 Toyota

B1902 Toyota Code - Short to Ground in Front Pretensioner Squib Right Circuit

Quick Answer

The Front Pretensioner Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Right (RH). Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Front Pretensioner Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt 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: B1902 Toyota indicates Short to Ground in Front Pretensioner Squib Right Circuit.
Common causes: Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Front Pretensioner Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt 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 11,207

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 Dec 03, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1902 Toyota Description

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

OBDII Code B1902 Toyota - Short to Ground in Front Pretensioner Squib Right Circuit - AutoCodes.com — B1902 Toyota Code - Short to Ground in Front Pretensioner Squib Right Circuit

What does this mean?

What are the Possible Causes of the DTC B1902 Toyota?

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

How to Fix the DTC B1902 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 B1902 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 B1902 Toyota code?

Need more information on how to fix the B1902 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1902 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

B1902 2013 Toyota RAV4 — Short to Ground in Front Pretensioner Squib Right Circuit
B1902 2014 Toyota RAV4 — Short to Ground in Front Pretensioner Squib Right Circuit
B1902 2015 Toyota RAV4 — Short to Ground in Front Pretensioner Squib Right Circuit
B1902 2016 Toyota RAV4 — Short to Ground in Front Pretensioner Squib Right Circuit
B1902 2017 Toyota RAV4 — Short to Ground in Front Pretensioner Squib Right Circuit
B1902 2018 Toyota RAV4 — Short to Ground in Front Pretensioner 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 B1902 Toyota Code

1. What are the common symptoms of OBDII code B1902 in a Toyota related to the Front Pretensioner Squib Right Circuit?

- Common symptoms include the airbag warning light staying illuminated on the dashboard and possible issues with the right front seatbelt pretensioner system.

2. What does the OBDII code B1902 "Short to Ground in Front Pretensioner Squib Right Circuit" mean in a Toyota?

- This code indicates a potential short circuit to ground in the front pretensioner squib right circuit of the airbag system.

3. What are the possible causes of OBDII code B1902 in a Toyota?

- Causes can include damaged wiring in the front pretensioner squib right circuit, a faulty pretensioner squib, or a problem with the airbag control module.

4. How can I diagnose the OBDII code B1902 in a Toyota?

- Diagnosis typically involves using a diagnostic scan tool to retrieve the specific fault code, inspecting the wiring and connections in the front pretensioner squib right circuit, and testing the components for proper functionality.

5. Are there any safety concerns associated with OBDII code B1902 in a Toyota?

- Yes, it is important to address this code promptly as it may indicate a potential issue with the airbag system, which could affect its ability to deploy properly in the event of a collision.

6. Can I continue driving my Toyota with OBDII code B1902 present?

- It is not recommended to continue driving the vehicle with this code present, as it may compromise the effectiveness of the airbag system in the event of an accident.

7. How can I repair OBDII code B1902 in a Toyota?

- Repair may involve repairing or replacing damaged wiring, replacing the pretensioner squib if faulty, or addressing any issues with the airbag control module as needed.

8. Is it possible to reset the OBDII code B1902 in a Toyota without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear if the root cause of the problem is not addressed.

9. Can I fix OBDII code B1902 in a Toyota by myself, or do I need professional help?

- Depending on your level of automotive repair experience, you may be able to address this code yourself by following the diagnostic and repair procedures outlined in the vehicle's service manual.

10. Are there any recalls or service bulletins related to OBDII code B1902 in Toyota vehicles?

- It is recommended to check with a Toyota dealership or the manufacturer's website to see if there are any recalls or service bulletins related to this specific OBDII code in your vehicle.