B0135 Code - Short Left Seat Belt Pretensioner Squib Circuit
Quick Answer
The left seat belt pretensioner squib circuit consists of the air bag center sensor and right seat belt pretensioner. Common causes include Faulty Left Seat Belt Pretensioner, Left Seat Belt Pretensioner harness is open or shorted, Left 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
- B0135 indicates Short Left Seat Belt Pretensioner Squib Circuit.
- Common causes
- Common causes include Faulty Left Seat Belt Pretensioner, Left Seat Belt Pretensioner harness is open or shorted, Left 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.
Code B0135 Description
What are the Possible Causes of the DTC B0135?
- Faulty Left Seat Belt Pretensioner
- Left Seat Belt Pretensioner harness is open or shorted
- Left Seat Belt Pretensioner circuit poor electrical connection
- Faulty Air Bag Control Module
How to Fix the DTC B0135?
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 B0135 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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Information for Specific Makes
- B0135 Lexus — Short Left Seat Belt Pretensioner Squib Circuit
- B0135 Scion — Short Left Seat Belt Pretensioner Squib Circuit
- B0135 Toyota — Short Left Seat Belt Pretensioner Squib Circuit
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 B0135 Code
1. What are the common symptoms of OBDII code B0135?
- Common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the seat belt pretensioner in the event of a collision.
2. What does the OBDII code B0135 indicate?
- This code specifically refers to a fault in the short left seat belt pretensioner squib circuit, signaling an issue with the seat belt's safety mechanism.
3. What are possible causes of OBDII code B0135?
- Causes may include a faulty seat belt pretensioner, damaged wiring or connectors in the circuit, or issues with the airbag control module.
4. How can I diagnose the source of OBDII code B0135?
- Diagnosing the issue typically involves using a scan tool to retrieve the code, inspecting the wiring and connectors related to the left seat belt pretensioner, and testing the components for proper functionality.
5. Can driving with OBDII code B0135 pose any risks?
- Continuing to drive with this code may compromise the effectiveness of the seat belt pretensioner in the event of a collision, potentially putting the driver and passengers at greater risk of injury.
6. Is it safe to reset the OBDII code B0135 without addressing the underlying issue?
- It is not recommended to simply reset the code without addressing the root cause, as the safety system affected by this code plays a crucial role in protecting occupants during a crash.
7. What repair tips can help resolve OBDII code B0135?
- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty seat belt pretensioner, and ensuring proper connections to the airbag control module.
8. Can OBDII code B0135 be fixed without professional help?
- While some basic troubleshooting steps can be taken, resolving this code may require specialized knowledge and tools, making professional assistance advisable for proper diagnosis and repair.
9. How much does it typically cost to repair OBDII code B0135?
- The cost of repairs can vary depending on the specific cause of the issue, but it may involve expenses for replacement parts, labor, and diagnostic services from a qualified mechanic or dealership.
10. Is it possible for OBDII code B0135 to reoccur after being fixed?
- If the underlying cause of the code is not fully addressed during the repair process, there is a possibility that OBDII code B0135 may reoccur, highlighting the importance of thorough troubleshooting and repair.
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