B1927 Lexus Code - Short To Ground In Rear Pretensioner Squib LH Circuit
Quick Answer
The Rear Pretensioner Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Seat Outer Belt Assembly Left (LH). Common causes include Faulty Seat Outer Belt Assembly Left (LH) (Rear Pretensioner Squib LH), Seat Outer Belt Assembly Left (LH) harness is open or shorted, Seat Outer Belt Assembly Left (LH) 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
- B1927 Lexus indicates Short To Ground In Rear Pretensioner Squib LH Circuit.
- Common causes
- Common causes include Faulty Seat Outer Belt Assembly Left (LH) (Rear Pretensioner Squib LH), Seat Outer Belt Assembly Left (LH) harness is open or shorted, Seat Outer Belt Assembly Left (LH) 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.
Code B1927 Lexus Description
What are the Possible Causes of the DTC B1927 Lexus?
- Faulty Seat Outer Belt Assembly Left (LH) (Rear Pretensioner Squib LH)
- Seat Outer Belt Assembly Left (LH) harness is open or shorted
- Seat Outer Belt Assembly Left (LH) circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1927 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 B1927 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 B1927 Lexus Code
What are the common symptoms of OBDII code B1927 in a Lexus related to a short to ground in the rear pretensioner squib LH circuit?
- Common symptoms include the airbag warning light illuminating on the dashboard, potential non-deployment of the seatbelt pretensioner in the event of a collision, and diagnostic trouble code B1927 being stored in the vehicle's computer system.
What are some possible causes of OBDII code B1927 in a Lexus?
- Possible causes of this code can include damaged wiring or connectors in the rear pretensioner squib LH circuit, a faulty pretensioner squib, or issues with the airbag control module.
How can I diagnose the OBDII code B1927 in a Lexus related to a short to ground in the rear pretensioner squib LH circuit?
- Diagnosing this code typically involves inspecting the wiring and connectors in the rear pretensioner squib LH circuit for damage, testing the pretensioner squib itself for continuity, and using a diagnostic scanner to retrieve and clear the trouble code.
What are the recommended steps for repairing OBDII code B1927 in a Lexus?
- The recommended repair steps often include repairing or replacing any damaged wiring or connectors in the rear pretensioner squib LH circuit, testing and potentially replacing the pretensioner squib if necessary, and clearing the trouble code from the vehicle's computer system.
Can I drive my Lexus with OBDII code B1927 related to a short to ground in the rear pretensioner squib LH circuit?
- It is not recommended to drive the vehicle with this code present, as it indicates a potential safety issue with the airbag system. It is best to address the problem promptly to ensure the proper functioning of the seatbelt pretensioner in the event of a collision.
Is it safe to repair OBDII code B1927 in a Lexus related to a short to ground in the rear pretensioner squib LH circuit myself?
- While some DIY enthusiasts may feel comfortable diagnosing and repairing this issue, it is crucial to have the necessary knowledge and tools to work on the vehicle's airbag system safely. If in doubt, it is best to consult with a professional mechanic or dealership.
How much does it typically cost to repair OBDII code B1927 in a Lexus?
- The cost of repairing this code can vary depending on the extent of the damage and the specific parts that need to be replaced. It is advisable to obtain a quote from a trusted mechanic or dealership for an accurate estimate.
Are there any recalls or technical service bulletins related to OBDII code B1927 in Lexus vehicles?
- It is recommended to check with Lexus or the National Highway Traffic Safety Administration (NHTSA) for any recalls or technical service bulletins related to this specific OBDII code in Lexus vehicles to see if there are any known issues or remedies provided by the manufacturer.
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