AutoCodesToyota – B1901 2015 Toyota RAV4

B1901 2015 Toyota RAV4 Code - Open 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
B1901 2015 Toyota RAV4 indicates Open 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 361
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 03, 2022
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Code B1901 2015 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 B1901 2015 Toyota RAV4 - Open in Front Pretensioner Squib Right Circuit - AutoCodes.com
B1901 2015 Toyota RAV4 Code - Open in Front Pretensioner Squib Right Circuit

What are the Possible Causes of the DTC B1901 2015 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 B1901 2015 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 B1901 2015 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 B1901 2015 Toyota RAV4 code?

Need more information on how to fix the B1901 2015 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1901 2015 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 B1901 2015 Toyota RAV4 Code

1. What does the OBDII code B1901 mean on a 2015 Toyota RAV4?

B1901 indicates an "Open in Front Pretensioner Squib Right Circuit," meaning there is an electrical issue in the passenger-side seatbelt pretensioner circuit.

2. What are the symptoms of code B1901 in a 2015 Toyota RAV4?

Common symptoms include the airbag warning light illuminating on the dashboard and the passenger-side seatbelt pretensioner potentially not functioning during a collision.

3. What causes the B1901 code to appear on a 2015 Toyota RAV4?

The code can be caused by damaged wiring, a loose or disconnected connector, a faulty seatbelt pretensioner, or issues with the airbag control module.

4. Is it safe to drive a 2015 Toyota RAV4 with code B1901?

While the vehicle may still drive, it’s unsafe as the seatbelt pretensioner and possibly other airbag system components may not deploy properly in an accident.

5. How do you diagnose the B1901 code in a 2015 Toyota RAV4?

Diagnosis involves scanning for the code with an OBDII scanner, visually inspecting the seatbelt pretensioner wiring and connectors, and testing the circuit for continuity.

6. Can the B1901 code clear itself on a 2015 Toyota RAV4?

No, this code typically will not clear itself. The underlying issue must be repaired before the code can be reset.

7. How much does it typically cost to fix the B1901 code on a 2015 Toyota RAV4?

Repair costs vary depending on the issue but can range from $100 for wiring repairs to over $500 if the seatbelt pretensioner needs replacement.

8. Can I fix the B1901 code on my 2015 Toyota RAV4 myself?

If you have automotive electrical knowledge, you might be able to repair damaged wiring or connectors. However, replacing the seatbelt pretensioner or working with the airbag system is best left to a professional.

9. Does the B1901 code affect other airbags in the system?

It might. A fault in the pretensioner circuit could disable the entire airbag system until repaired, as a safety precaution.

10. What tools are needed to repair the B1901 code on a 2015 Toyota RAV4?

Basic tools include a multimeter, OBDII scanner, and possibly a repair manual for detailed wiring diagrams. For major repairs, specialized tools for airbag system work may be necessary.

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