B1940 Toyota Code - Short in Selectable Force Limiter Squib Right Circuit
Quick Answer
The Selectable Force Limiter Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Right (RH). Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Selectable Force Limiter Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt Assembly Right 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
- B1940 Toyota indicates Short in Selectable Force Limiter Squib Right Circuit.
- Common causes
- Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Selectable Force Limiter Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt Assembly Right 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 B1940 Toyota Description
What are the Possible Causes of the DTC B1940 Toyota?
- Faulty Front Seat Outer Belt Assembly Right (RH) (Selectable Force Limiter Squib Right)
- Front Seat Outer Belt Assembly Right harness is open or shorted
- Front Seat Outer Belt Assembly Right circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1940 Toyota?
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 B1940 Toyota 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.
Need more information about the B1940 Toyota code?
Need more information on how to fix the B1940 Toyota code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1940 Toyota code diagnosed by a professional: Find a repair shop in your area
Information for Specific Toyota Models
- B1940 2013 Toyota RAV4 — Short in Selectable Force Limiter Squib Right Circuit
- B1940 2014 Toyota RAV4 — Short in Selectable Force Limiter Squib Right Circuit
- B1940 2015 Toyota RAV4 — Short in Selectable Force Limiter Squib Right Circuit
- B1940 2016 Toyota RAV4 — Short in Selectable Force Limiter Squib Right Circuit
- B1940 2017 Toyota RAV4 — Short in Selectable Force Limiter Squib Right Circuit
- B1940 2018 Toyota RAV4 — Short in Selectable Force Limiter Squib Right 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 B1940 Toyota Code
What does the OBDII code B1940 mean on a Toyota?
The code B1940 indicates a short circuit in the Selectable Force Limiter Squib Right Circuit, which is part of the passenger-side seatbelt pretensioner system.
What are the common symptoms of code B1940 in a Toyota?
Common symptoms include the airbag warning light illuminating on the dashboard and potential deactivation of the airbag or seatbelt pretensioner system.
What causes the B1940 code to appear in a Toyota?
The code is typically caused by a short circuit in the wiring, a damaged connector, or a fault in the seatbelt pretensioner assembly.
Can I drive my Toyota with a B1940 code?
While the vehicle may still be drivable, the airbag system and seatbelt pretensioner may not function properly in an accident, posing a safety risk.
How do I diagnose the B1940 code in a Toyota?
Diagnosis involves inspecting the wiring and connectors for damage or shorts, checking the seatbelt pretensioner, and using a scan tool to confirm the fault.
What tools are needed to fix the B1940 code?
You may need a diagnostic scan tool, multimeter, and basic automotive tools to inspect and repair wiring or connectors.
How much does it cost to repair a B1940 code on a Toyota?
Repair costs can range from $50 to $500 depending on whether the issue is a simple wiring repair or requires replacing the seatbelt pretensioner assembly.
Can I fix the B1940 code myself on a Toyota?
If you're experienced with automotive electrical systems, you may be able to inspect and repair the wiring or connectors. Otherwise, it's best left to a professional.
Does clearing the B1940 code fix the problem?
Clearing the code will turn off the warning light temporarily, but the underlying issue must be repaired to prevent the code from returning.
What happens if the B1940 code is ignored?
Ignoring the code can result in a non-functional seatbelt pretensioner or airbag system, reducing occupant safety in the event of a collision.
Discuss the causes and fixes for B1940 Toyota OBDII Code
Code B1940 Toyota comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
