AutoCodes – Scion – B1901 Scion

B1901 Scion 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 Scion 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 1,656

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 B1901 Scion 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 Scion - Open in Front Pretensioner Squib Right Circuit - AutoCodes.com — B1901 Scion Code - Open in Front Pretensioner Squib Right Circuit

What does this mean?

What are the Possible Causes of the DTC B1901 Scion?

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 Scion?

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 Scion 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 Scion code?

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

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Get the B1901 Scion 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 Scion Code

1. What are the common symptoms of OBDII code B1901 in a Scion related to an open in the front pretensioner squib right circuit?

- Common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the front right airbag during a collision.

2. What are some possible causes of OBDII code B1901 in a Scion indicating an open in the front pretensioner squib right circuit?

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

3. How can I diagnose the issue related to OBDII code B1901 in my Scion for an open in the front pretensioner squib right circuit?

- Diagnosing the issue may involve using a scan tool to retrieve the specific fault code, inspecting the wiring and connectors for damage, and testing the front right pretensioner squib for continuity.

4. Is it safe to drive my Scion with OBDII code B1901 indicating an open in the front pretensioner squib right circuit?

- It is not recommended to drive the vehicle with this issue unresolved, as it may compromise the proper functioning of the front right airbag in the event of a collision.

5. Can I repair OBDII code B1901 in my Scion related to an open in the front pretensioner squib right circuit on my own?

- While some DIY enthusiasts may attempt to repair this issue themselves, it is recommended to seek assistance from a qualified mechanic or technician due to the complexity and safety implications of airbag systems.

6. What is the typical cost to repair OBDII code B1901 in a Scion for an open in the front pretensioner squib right circuit?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the front right pretensioner squib, repairing damaged wiring, or resetting the airbag control module, with costs potentially ranging from a few hundred to over a thousand dollars.

7. Are there any safety precautions I should take when working on the front pretensioner squib circuit in my Scion to address OBDII code B1901?

- Prior to working on the airbag system, it is crucial to disconnect the vehicle's battery and wait for the system to fully discharge to avoid accidental airbag deployment, and to follow proper safety procedures outlined in the vehicle's service manual.

8. How long does it typically take to repair OBDII code B1901 in a Scion associated with an open in the front pretensioner squib right circuit?

- The repair time can vary based on the extent of the issue and the availability of parts, but it may take a few hours to a full day for a skilled technician to diagnose and resolve the open circuit fault.

9. Can a faulty front pretensioner squib cause other OBDII codes to appear in my Scion's diagnostic system?

- Yes, a malfunctioning front pretensioner squib can trigger additional OBDII codes related to the airbag system, such as circuit resistance or deployment issues, which may require further diagnosis and repair.

10. Will resetting the OBDII system clear the B1901 code in my Scion for an open in the front pretensioner squib right circuit?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the open circuit fault is not addressed and repaired, the code is likely to reappear upon subsequent system checks.