Engine-CodesToyota – B1902 2016 Toyota RAV4

B1902 2016 Toyota RAV4 Code - Short to Ground in Front Pretensioner Squib Right Circuit

Quick Answer

The B1902 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates a short to ground in the front pretensioner squib right circuit. Common causes include Wiring damage or short circuits in the front pretensioner squib right circuit, Faulty pretensioner squib or airbag control module, Corrosion or poor connections in the electrical system. 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 2016 Toyota RAV4 indicates Short to Ground in Front Pretensioner Squib Right Circuit.
Common causes
Common causes include Wiring damage or short circuits in the front pretensioner squib right circuit, Faulty pretensioner squib or airbag control module, Corrosion or poor connections in the electrical system.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code B1902 2016 Toyota RAV4 Description

The B1902 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 indicates a short to ground in the front pretensioner squib right circuit. This code specifically refers to an issue with the right-side front seatbelt pretensioner, which is a safety feature designed to tighten the seatbelt in the event of a collision, reducing the risk of injury to the occupant. A short to ground means that there is an unintended connection between the electrical circuit and the vehicle's chassis or ground, which can disrupt the proper functioning of the pretensioner system.

OBDII Code B1902 2016 Toyota RAV4 - Short to Ground in Front Pretensioner Squib Right Circuit
B1902 2016 Toyota RAV4 Code - Short to Ground in Front Pretensioner Squib Right Circuit

Common Causes of B1902 2016 Toyota RAV4

  1. Wiring damage or short circuits in the front pretensioner squib right circuit.
  2. Faulty pretensioner squib or airbag control module.
  3. Corrosion or poor connections in the electrical system.
  4. Impact or damage to the front right side of the vehicle.
  5. Manufacturing defects in the pretensioner system components.

Symptoms of B1902 2016 Toyota RAV4

  1. Illumination of the airbag warning light on the dashboard.
  2. Inability to properly tighten the seatbelt during sudden stops or collisions.
  3. Diagnostic trouble code B1902 stored in the vehicle's computer system.
  4. Potential failure of the airbag system to deploy in a crash.

How to Fix B1902 2016 Toyota RAV4

  1. Begin by disconnecting the vehicle's battery to prevent any electrical mishaps.
  2. Inspect the wiring harness and connectors in the front pretensioner squib right circuit for damage or corrosion. Repair or replace any damaged components.
  3. Check the pretensioner squib and airbag control module for faults. Replace any faulty components as needed.
  4. Clear the diagnostic trouble code from the vehicle's computer system using a scan tool.
  5. Reconnect the battery and test the seatbelt pretensioner system to ensure proper functionality.

Cost to Fix B1902 2016 Toyota RAV4

The typical repair costs for addressing a B1902 code in a 2016 Toyota RAV4 can vary depending on the extent of the issue and the specific components that need to be replaced. In general, the cost of parts for a pretensioner squib or wiring harness replacement can range from $200 to $500, while labor costs may add an additional $100 to $300. Overall, the total repair cost for this issue could fall within the range of $300 to $800. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and the availability of parts. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost assessment.

Need more information about the B1902 2016 Toyota RAV4 code?

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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 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1902 in a 2016 Toyota RAV4?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the front pretensioner squib right circuit.

2. What does the OBDII code B1902 "Short to Ground in Front Pretensioner Squib Right Circuit" mean for a 2016 Toyota RAV4?

- This code indicates a detected short to ground in the front pretensioner squib right circuit, likely related to the airbag system.

3. What are the possible causes of OBDII code B1902 in a 2016 Toyota RAV4?

- Potential causes include damaged wiring, a faulty pretensioner squib, a malfunctioning airbag control module, or issues with the airbag system's sensors.

4. How can I diagnose the OBDII code B1902 in my 2016 Toyota RAV4?

- Diagnosis typically involves inspecting the wiring harness, connectors, and components related to the front pretensioner squib right circuit, as well as using a diagnostic scanner to read and clear the code.

5. Is it safe to drive my 2016 Toyota RAV4 with OBDII code B1902 present?

- It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the airbag system that could affect its proper function in case of an accident.

6. Can I reset the OBDII code B1902 in my 2016 Toyota RAV4 without fixing the underlying issue?

- While you can clear the code with a diagnostic scanner, it is crucial to address the root cause of the problem to ensure the safety and functionality of the airbag system.

7. How much does it typically cost to repair OBDII code B1902 in a 2016 Toyota RAV4?

- Repair costs can vary depending on the specific cause of the issue, but they may involve replacing damaged wiring, the pretensioner squib, or other components in the airbag system.

8. Are there any DIY tips for fixing OBDII code B1902 in a 2016 Toyota RAV4?

- DIY repairs for this code are not recommended due to the complexity and safety implications of working on the airbag system. It's advised to seek professional assistance.

9. Can OBDII code B1902 in a 2016 Toyota RAV4 be a recurring issue after repair?

- If the root cause of the problem is not properly addressed during repair, the code may reappear. It's essential to ensure a thorough diagnosis and fix to prevent recurrence.

10. How long does it take to repair OBDII code B1902 in a 2016 Toyota RAV4?

- Repair time can vary based on the specific cause of the issue and the extent of the repair needed. It's best to consult with a qualified mechanic for an accurate estimate of the repair duration.

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