AutoCodes – Toyota – B1902 2018 Toyota RAV4

B1902 2018 Toyota RAV4 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 2018 Toyota RAV4 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 305

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 Dec 03, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1902 2018 Toyota RAV4 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 2018 Toyota RAV4 - Short to Ground in Front Pretensioner Squib Right Circuit - AutoCodes.com — B1902 2018 Toyota RAV4 Code - Short to Ground in Front Pretensioner Squib Right Circuit

What does this mean?

What are the Possible Causes of the DTC B1902 2018 Toyota RAV4?

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 2018 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 B1902 2018 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 B1902 2018 Toyota RAV4 code?

Need more information on how to fix the B1902 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1902 2018 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 B1902 2018 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1902 in a 2018 Toyota RAV4?

- The common symptoms include the airbag warning light on the dashboard staying illuminated and a potential loss of functionality in the front right seatbelt pretensioner.

2. What does the OBDII code B1902 "Short to Ground in Front Pretensioner Squib Right Circuit" mean for a 2018 Toyota RAV4?

- This code indicates a detected short circuit to ground in the front pretensioner squib right circuit, potentially affecting the proper deployment of the seatbelt pretensioner in case of an accident.

3. What are the possible causes of OBDII code B1902 in a 2018 Toyota RAV4?

- Common causes include damaged wiring or connectors in the front right seatbelt pretensioner circuit, a faulty pretensioner squib, or a malfunctioning airbag control module.

4. How can I diagnose the OBDII code B1902 in my 2018 Toyota RAV4?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve and interpret the fault codes, followed by a thorough inspection of the front right seatbelt pretensioner circuit for any visible damage or issues.

5. Can I continue driving my 2018 Toyota RAV4 with the OBDII code B1902 present?

- It is not recommended to drive the vehicle with this code active, as the seatbelt pretensioner may not function correctly in the event of a collision, potentially compromising occupant safety.

6. How can I repair OBDII code B1902 in my 2018 Toyota RAV4?

- Repairing this code usually involves addressing the root cause, which may include repairing or replacing damaged wiring, connectors, or components in the front right seatbelt pretensioner circuit.

7. Is it safe to reset the OBDII code B1902 in my 2018 Toyota RAV4 without fixing the underlying issue?

- Resetting the code without addressing the underlying problem is not recommended, as it may lead to the same issue recurring and potentially compromising the safety features of the vehicle.

8. Can a DIY enthusiast fix the OBDII code B1902 in a 2018 Toyota RAV4?

- While some aspects of diagnosing and repairing this code may be within reach of a DIY enthusiast with the necessary skills and tools, it is recommended to consult a professional technician for proper diagnosis and repair.

9. How much does it cost to repair the OBDII code B1902 in a 2018 Toyota RAV4?

- The cost of repairing this code can vary depending on the root cause of the issue and the specific components that need to be repaired or replaced. It is advisable to obtain a professional assessment for an accurate cost estimate.

10. How often does the OBDII code B1902 occur in 2018 Toyota RAV4 vehicles?

- The occurrence of this specific OBDII code can vary among 2018 Toyota RAV4 vehicles, but it is not an uncommon issue, especially in vehicles that have experienced electrical or mechanical issues in the seatbelt pretensioner system.