B1926 Lexus Code - Open In Rear Pretensioner Squib LH Circuit
Quick Answer
The B1926 diagnostic trouble code for Lexus vehicles indicates an open circuit in the rear pretensioner squib LH circuit. Common causes include Damaged wiring or connectors in the rear pretensioner squib LH circuit, Faulty seatbelt pretensioner squib, Corrosion or rust affecting the electrical connections. 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
- B1926 Lexus indicates Open In Rear Pretensioner Squib LH Circuit.
- Common causes
- Common causes include Damaged wiring or connectors in the rear pretensioner squib LH circuit, Faulty seatbelt pretensioner squib, Corrosion or rust affecting the electrical connections.
- 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 B1926 Lexus Description
The B1926 diagnostic trouble code for Lexus vehicles indicates an open circuit in the rear pretensioner squib LH circuit. In simpler terms, this means that there is a problem with the left rear seatbelt pretensioner system. The seatbelt pretensioner is a safety feature that tightens the seatbelt in the event of a collision, reducing the risk of injury to the occupants. An open circuit in this system can prevent the pretensioner from functioning properly, compromising the safety of the vehicle's occupants.
Common Causes of B1926 Lexus
- Damaged wiring or connectors in the rear pretensioner squib LH circuit.
- Faulty seatbelt pretensioner squib.
- Corrosion or rust affecting the electrical connections.
- Impact or damage to the vehicle that has affected the seatbelt pretensioner system.
- Faulty airbag control module.
Symptoms of B1926 Lexus
- Airbag warning light on the dashboard.
- Seatbelt warning light on the dashboard.
- Seatbelt pretensioner not activating in a collision.
- Audible warning chime when driving.
How to Fix B1926 Lexus
- Begin by diagnosing the specific cause of the open circuit in the rear pretensioner squib LH circuit using a diagnostic scanner and multimeter.
- Inspect the wiring and connectors for any damage or corrosion. Repair or replace any damaged components.
- Test the seatbelt pretensioner squib to ensure it is functioning correctly. Replace if necessary.
- Clear the diagnostic trouble code from the vehicle's onboard computer using a scanner.
- Perform a test drive to verify that the issue has been resolved and that the airbag warning light no longer appears.
Cost to Fix B1926 Lexus
The cost of repairing an open circuit in the rear pretensioner squib LH circuit can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the parts for this repair may cost between $100 and $300, while the labor costs can range from $100 to $300. Overall, the total cost of repairs for this issue could be between $200 and $600. It is advisable to contact local auto repair shops for more accurate estimates based on your vehicle make and model. Keep in mind that rates may be higher at dealerships or in metropolitan areas.
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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.
Frequently Asked Questions about B1926 Lexus Code
1. What are common symptoms of the OBDII code B1926 in a Lexus related to an open in the rear pretensioner squib LH circuit?
The common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the seatbelt pretensioner in the event of a collision.
2. What are possible causes of the B1926 code indicating an open in the rear pretensioner squib LH circuit in a Lexus?
Possible causes include a faulty pretensioner squib LH unit, damaged wiring or connectors in the circuit, or a problem with the airbag control module.
3. How can I diagnose the issue behind the B1926 code in my Lexus's rear pretensioner squib LH circuit?
Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble code, inspecting the wiring and connectors for any visible damage, and testing the pretensioner squib LH unit for proper functionality.
4. Can I drive my Lexus with the B1926 code present in the rear pretensioner squib LH circuit?
It is not recommended to drive the vehicle with the B1926 code active, as the seatbelt pretensioner system may not function properly in the event of a collision, compromising occupant safety.
5. How can I repair the open in the rear pretensioner squib LH circuit issue in my Lexus?
Repair options may include replacing the faulty pretensioner squib LH unit, repairing or replacing damaged wiring and connectors, or resetting the airbag control module after addressing the root cause of the problem.
6. Are there any safety precautions I should take when working on the rear pretensioner squib LH circuit in my Lexus?
Prior to working on the airbag system, it is crucial to disconnect the vehicle's battery and wait for at least 10-15 minutes to allow any stored electrical energy to dissipate to reduce the risk of accidental airbag deployment.
7. How much does it typically cost to fix the B1926 code related to the rear pretensioner squib LH circuit in a Lexus?
The cost of repairs can vary depending on the exact cause of the issue, but it may involve parts replacement, labor costs, and potential diagnostic fees, with the total cost ranging from a few hundred to over a thousand dollars.
8. Can I reset the B1926 code related to the rear pretensioner squib LH circuit in my Lexus without addressing the underlying problem?
Resetting the code without fixing the root cause will only turn off the warning light temporarily, as the issue will persist and the code will likely reappear once the system detects the problem during subsequent scans.
9. Is it possible to clear the B1926 code associated with the rear pretensioner squib LH circuit in my Lexus without professional help?
While it is possible to clear the code using an OBDII scanner, it is crucial to address the underlying problem causing the code to ensure the proper functioning of the seatbelt pretensioner system and overall safety.
10. How long does it take to fix the B1926 code indicating an open in the rear pretensioner squib LH circuit in a Lexus?
The repair time can vary based on the specific issue and the expertise of the technician, but it typically takes a few hours to a full day to diagnose the problem, perform the necessary repairs, and reset the system to clear the code.
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