AutoCodes – Lexus – B0133 Lexus

B0133 Lexus Code - Short To Battery Right Seat Belt Pretensioner Squib Circuit

Quick Answer

The right seat belt pretensioner squib circuit consists of the air bag center sensor and right seat belt pretensioner. Common causes include Faulty Right Seat Belt Pretensioner, Right Seat Belt Pretensioner harness is open or shorted, Right Seat Belt Pretensioner 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: B0133 Lexus indicates Short To Battery Right Seat Belt Pretensioner Squib Circuit.
Common causes: Common causes include Faulty Right Seat Belt Pretensioner, Right Seat Belt Pretensioner harness is open or shorted, Right Seat Belt Pretensioner 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 3,294

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 Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0133 Lexus Description

The right seat belt pretensioner squib circuit consists of the air bag center sensor and right seat belt pretensioner. The squib circuit causes the right seat belt pretensioner to deploy when deployment conditions are satisfied. The Air Bag Control Module monitors the Right Seat Belt Pretensioner. The Air Bag Control Module sets the OBDII code when the Right Seat Belt Pretensioner is not to factory specifications.

OBDII Code B0133 Lexus - Short To Battery Right Seat Belt Pretensioner Squib Circuit - AutoCodes.com — B0133 Lexus Code - Short To Battery Right Seat Belt Pretensioner Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B0133 Lexus?

Faulty Right Seat Belt Pretensioner
Right Seat Belt Pretensioner harness is open or shorted
Right Seat Belt Pretensioner circuit poor electrical connection
Faulty Air Bag Control Module

How to Fix the DTC B0133 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 B0133 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 B0133 Lexus code?

Need more information on how to fix the B0133 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0133 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 B0133 Lexus Code

1. What are the common symptoms of OBDII code B0133 in a Lexus related to the right seat belt pretensioner squib circuit?

The common symptoms include illuminated airbag warning light on the dashboard and possible non-deployment of the right seat belt pretensioner in the event of a collision.

2. What are some possible causes of OBDII code B0133 indicating a short to battery in the right seat belt pretensioner squib circuit of a Lexus?

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

3. How can I diagnose the issue related to OBDII code B0133 in my Lexus right seat belt pretensioner squib circuit?

Diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble code, inspecting the wiring and connectors for any visible damage, and testing the components in the circuit for proper functionality.

4. Is it safe to continue driving my Lexus with OBDII code B0133 triggered for the right seat belt pretensioner squib circuit?

It is not recommended to drive the vehicle with an active airbag-related fault code, as it may compromise the effectiveness of the seat belt pretensioner in the event of an accident.

5. Can I repair OBDII code B0133 in my Lexus related to the right seat belt pretensioner squib circuit myself?

While some basic troubleshooting steps can be taken, repairing the issue typically requires specialized knowledge and tools. It is advisable to seek assistance from a qualified mechanic or dealership.

6. How much does it cost to fix OBDII code B0133 indicating a short to battery in the right seat belt pretensioner squib circuit of a Lexus?

The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic fees. It is recommended to obtain quotes from different service providers.

7. Are there any recalls or technical service bulletins related to OBDII code B0133 in Lexus vehicles?

It is advisable to check with Lexus dealerships or visit the official Lexus website to inquire about any recalls or technical service bulletins specific to this OBDII code and related components.

8. Can a faulty battery or alternator cause OBDII code B0133 to appear in a Lexus right seat belt pretensioner squib circuit?

While rare, electrical issues stemming from a faulty battery or alternator could potentially impact the functionality of the airbag system and trigger the B0133 trouble code. It's important to address any underlying electrical problems.

9. Will disconnecting the battery reset OBDII code B0133 in a Lexus with a short to battery in the right seat belt pretensioner squib circuit?

Disconnecting the battery may temporarily clear the trouble code, but it will not resolve the underlying issue causing the fault. It is recommended to diagnose and repair the problem to ensure the safety systems function properly.

10. How long does it typically take to repair OBDII code B0133 related to the right seat belt pretensioner squib circuit in a Lexus?

The repair time can vary depending on the complexity of the issue and the availability of parts. In some cases, it may be a quick fix, while other situations could require more extensive troubleshooting and repair work.