AutoCodes – Lexus – B1922 Lexus

B1922 Lexus Code - Short To Ground In Rear Pretensioner Squib RH Circuit

Quick Answer

The Rear Pretensioner Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and the Rear Seat Outer Belt Assembly Right (RH). Common causes include Faulty Rear Seat Outer Belt Assembly Right (RH) (Rear Pretensioner Squib RH), Rear Seat Outer Belt Assembly Right (RH) harness is open or shorted, Rear Seat Outer Belt Assembly Right (RH) 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: B1922 Lexus indicates Short To Ground In Rear Pretensioner Squib RH Circuit.
Common causes: Common causes include Faulty Rear Seat Outer Belt Assembly Right (RH) (Rear Pretensioner Squib RH), Rear Seat Outer Belt Assembly Right (RH) harness is open or shorted, Rear Seat Outer Belt Assembly Right (RH) 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 2,883

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 Jul 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1922 Lexus Description

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

OBDII Code B1922 Lexus - Short To Ground In Rear Pretensioner Squib RH Circuit - AutoCodes.com — B1922 Lexus Code - Short To Ground In Rear Pretensioner Squib RH Circuit

What does this mean?

What are the Possible Causes of the DTC B1922 Lexus?

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

How to Fix the DTC B1922 Lexus?

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 B1922 Lexus 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 B1922 Lexus code?

Need more information on how to fix the B1922 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1922 Lexus 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 B1922 Lexus Code

1. What are the common symptoms of OBDII code B1922 in a Lexus related to a short to ground in the rear pretensioner squib RH circuit?

The common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the seatbelt pretensioner in the event of a collision.

2. What are the possible causes of OBDII code B1922 in a Lexus indicating a short to ground in the rear pretensioner squib RH circuit?

Potential causes include damaged wiring or connectors in the rear pretensioner squib RH circuit, a faulty pretensioner squib, or a malfunctioning airbag control module.

3. How can I diagnose the issue related to OBDII code B1922 in a Lexus myself?

You can start by visually inspecting the wiring and connectors in the rear pretensioner squib RH circuit for any visible damage. Additionally, using a multimeter to test for continuity and resistance in the circuit can help pinpoint the issue.

4. Is it safe to drive my Lexus with OBDII code B1922 indicating a short to ground in the rear pretensioner squib RH circuit?

It is not recommended to drive the vehicle with this issue as the seatbelt pretensioner may not deploy properly in the event of an accident, compromising your safety.

5. Can I reset the OBDII code B1922 in my Lexus related to a short to ground in the rear pretensioner squib RH circuit?

Resetting the code without addressing the underlying issue will not solve the problem. It is important to diagnose and repair the root cause of the fault before resetting the code.

6. How much does it typically cost to repair OBDII code B1922 in a Lexus caused by a short to ground in the rear pretensioner squib RH circuit?

The cost of repairing this issue can vary depending on the exact cause of the fault, but it may involve replacing damaged wiring, connectors, or the pretensioner squib itself. It is recommended to consult a professional for an accurate estimate.

7. Can I repair OBDII code B1922 in my Lexus related to a short to ground in the rear pretensioner squib RH circuit myself?

While some DIY enthusiasts may be able to address this issue, working with airbag systems can be complex and potentially dangerous. It is advisable to seek assistance from a qualified mechanic or technician with experience in handling airbag-related faults.

8. Are there any preventive measures I can take to avoid OBDII code B1922 in my Lexus due to a short to ground in the rear pretensioner squib RH circuit?

Regularly inspecting the wiring and connectors in the airbag system for signs of wear or damage can help prevent issues like B1922. Additionally, following proper maintenance schedules for your vehicle can minimize the risk of electrical faults.

9. Is OBDII code B1922 related to a short to ground in the rear pretensioner squib RH circuit a common issue in Lexus vehicles?

While not extremely common, issues with airbag systems, including faults like B1922, can occur in Lexus vehicles due to various factors such as wear and tear, electrical problems, or manufacturing defects.

10. How long does it typically take to repair OBDII code B1922 in a Lexus caused by a short to ground in the rear pretensioner squib RH circuit?

The repair time can vary depending on the exact cause of the fault and the availability of parts. In general, it may take a few hours to a full day to diagnose and fix the issue, but this can vary based on the complexity of the repair.