B0131 Code - Open 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
- B0131 indicates Open 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.
Code B0131 Description
What are the Possible Causes of the DTC B0131?
- 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 B0131?
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 B0131 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
- B0131 Lexus — Open Right Seat Belt Pretensioner Squib Circuit
- B0131 Scion — Open Right Seat Belt Pretensioner Squib Circuit
- B0131 Toyota — Open Right 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 B0131 Code
1. What does the OBDII code B0131 mean?
B0131 indicates an open circuit in the right seat belt pretensioner squib, which is part of the airbag system responsible for tightening the seat belt during a crash.
2. What are the symptoms of code B0131?
Common symptoms include the airbag warning light illuminated on the dashboard and the potential non-functioning of the right seat belt pretensioner during an accident.
3. What causes the B0131 code to appear?
The code can be triggered by a damaged seat belt pretensioner, corroded or loose wiring, a defective airbag control module, or poor electrical connections.
4. Can I drive with the B0131 code?
While the car may still drive, the right seat belt pretensioner might not function properly during a collision, compromising occupant safety.
5. How do I diagnose the B0131 code?
Start by visually inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check for continuity in the circuit and verify the functionality of the pretensioner and control module.
6. How do I fix the B0131 code?
Repair may involve replacing the faulty seat belt pretensioner, repairing damaged wiring, cleaning corroded connectors, or resetting the airbag control module.
7. Can the B0131 code be cleared without repairs?
Clearing the code without addressing the underlying issue is not recommended, as the problem will likely return and compromise safety.
8. How much does it cost to repair the B0131 code?
Repair costs vary depending on the issue but typically range from $100 to $300 for wiring repairs or up to $600 or more for seat belt pretensioner replacement.
9. Is the B0131 code covered under warranty?
Seat belt components are often covered under extended warranties due to safety regulations, but this depends on your vehicle's manufacturer and warranty terms.
10. Can a weak battery cause the B0131 code?
A weak or failing battery is unlikely to cause this specific code but can sometimes contribute to electrical issues in the airbag system.
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