B1907 Lexus Code - Short to Ground in Front Pretensioner Squib Left Circuit
Quick Answer
The Front Pretensioner Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Left (LH). Common causes include Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left), Front Seat Outer Belt Assembly Left is open or shorted, Front Seat Outer Belt Assembly Left 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
- B1907 Lexus indicates Short to Ground in Front Pretensioner Squib Left Circuit.
- Common causes
- Common causes include Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left), Front Seat Outer Belt Assembly Left is open or shorted, Front Seat Outer Belt Assembly Left 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.
Code B1907 Lexus Description
What are the Possible Causes of the DTC B1907 Lexus?
- Faulty Front Seat Outer Belt Assembly Left (LH) (Front Pretensioner Squib Left)
- Front Seat Outer Belt Assembly Left is open or shorted
- Front Seat Outer Belt Assembly Left poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1907 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 B1907 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.
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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 B1907 Lexus Code
1. What are the common symptoms of OBDII code B1907 in a Lexus related to the Front Pretensioner Squib Left Circuit?
- Common symptoms include the airbag warning light illuminating on the dashboard, along with possible non-deployment of the front left seatbelt pretensioner in the event of a collision.
2. What does the OBDII code B1907 in a Lexus indicate about the Front Pretensioner Squib Left Circuit?
- This code indicates a short to ground in the front left seatbelt pretensioner squib circuit, which could prevent the proper operation of the safety system.
3. What are some possible causes of OBDII code B1907 in a Lexus?
- Potential causes include damaged wiring or connectors in the front left seatbelt pretensioner circuit, a faulty pretensioner squib unit, or a problem with the airbag control module.
4. How can I diagnose the issue causing OBDII code B1907 in my Lexus?
- Diagnosing this code typically involves inspecting the wiring and connectors in the front left seatbelt pretensioner circuit, testing the pretensioner squib unit for proper functionality, and checking the airbag control module for faults.
5. Is it safe to drive my Lexus with OBDII code B1907 present?
- It is not recommended to drive the vehicle with this code present, as it indicates a potential issue with the front left seatbelt pretensioner system, which is crucial for occupant safety in the event of a collision.
6. Can I reset the OBDII code B1907 in my Lexus without fixing the underlying issue?
- While you can clear the code temporarily, it will likely reappear until the root cause of the problem is addressed and resolved.
7. What are some repair tips for fixing OBDII code B1907 in a Lexus?
- Repair tips include carefully inspecting and repairing any damaged wiring or connectors in the front left seatbelt pretensioner circuit, replacing the pretensioner squib unit if necessary, and addressing any faults in the airbag control module.
8. How much does it typically cost to repair OBDII code B1907 in a Lexus?
- Repair costs can vary depending on the specific issue causing the code, but they may range from a few hundred to over a thousand dollars, including parts and labor.
9. Can OBDII code B1907 in a Lexus be fixed at home, or is professional assistance necessary?
- While some DIY enthusiasts may be able to address this code at home, it often requires specialized knowledge and equipment, so seeking professional assistance from a certified mechanic is recommended.
10. How can I prevent OBDII code B1907 from occurring in my Lexus in the future?
- To prevent this code from appearing again, it's essential to regularly inspect and maintain the seatbelt pretensioner system, avoid any physical damage to the wiring or connectors, and address any airbag system warnings promptly.
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