B1943 Code - Short to Positive 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
- B1943 indicates Short to Positive 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 B1943 Description
What are the Possible Causes of the DTC B1943?
- 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 B1943?
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 B1943 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
- B1943 Lexus — Short to Positive in Selectable Force Limiter Squib Right Circuit
- B1943 Scion — Short to Positive in Selectable Force Limiter Squib Right Circuit
- B1943 Toyota — Short to Positive 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 B1943 Code
1. What does the OBDII code B1943 mean?
B1943 indicates a short to positive in the selectable force limiter squib right circuit, typically related to the airbag or seatbelt pretensioner system.
2. What are the common symptoms of the B1943 code?
Symptoms include the airbag warning light staying on, potential malfunction of the seatbelt pretensioner, and in some cases, the airbag system may be disabled.
3. What causes the B1943 code to appear?
Common causes include damaged wiring, corroded or loose electrical connectors, a short circuit in the force limiter squib circuit, or a faulty seatbelt pretensioner.
4. Is the airbag system affected by the B1943 code?
Yes, the airbag system may be partially or fully disabled when this code is active, reducing safety during a collision.
5. How do I diagnose the B1943 code?
Start by inspecting the wiring and connectors in the selectable force limiter squib right circuit for damage or corrosion. Use a multimeter to test for shorts to positive voltage.
6. Can I drive with a B1943 code?
Driving is possible, but it is unsafe since the airbag and seatbelt systems may not function properly in the event of an accident.
7. How is the B1943 code repaired?
Repairs may involve fixing or replacing damaged wiring, cleaning or reconnecting corroded connectors, or replacing a faulty seatbelt pretensioner.
8. How much does it cost to fix the B1943 code?
Repair costs can vary from $100 to $500 or more, depending on whether wiring repairs or component replacements, such as a pretensioner, are needed.
9. Can I clear the B1943 code without repairs?
Clearing the code without addressing the underlying issue will likely result in the code returning, as the fault remains unresolved.
10. Do I need professional help to fix the B1943 code?
While basic inspections can be done at home, resolving the issue often requires specialized tools and knowledge. Consulting a professional technician is recommended.
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