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Engine-Codes – Toyota – B1940 2016 Toyota RAV4

B1940 2016 Toyota RAV4 Code - Short in Selectable Force Limiter Squib Right Circuit

Quick Answer

The B1940 code for a 2016 Toyota RAV4 indicates a short in the Selectable Force Limiter Squib Right Circuit. Common causes include Short circuit in the wiring harness connected to the selectable force limiter squib, Faulty selectable force limiter squib component, Corrosion or damage to the connectors in the circuit. 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 2016 Toyota RAV4 indicates Short in Selectable Force Limiter Squib Right Circuit.
Common causes
Common causes include Short circuit in the wiring harness connected to the selectable force limiter squib, Faulty selectable force limiter squib component, Corrosion or damage to the connectors in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code B1940 2016 Toyota RAV4 Description

The B1940 code for a 2016 Toyota RAV4 indicates a short in the Selectable Force Limiter Squib Right Circuit. This circuit is part of the vehicle's supplemental restraint system (SRS), specifically related to the airbag system. The selectable force limiter squib is a component that helps control the deployment force of the airbag based on the severity of a collision.

OBDII Code B1940 2016 Toyota RAV4 - Short in Selectable Force Limiter Squib Right Circuit
B1940 2016 Toyota RAV4 Code - Short in Selectable Force Limiter Squib Right Circuit

Common Causes of B1940 2016 Toyota RAV4

  1. Short circuit in the wiring harness connected to the selectable force limiter squib
  2. Faulty selectable force limiter squib component
  3. Corrosion or damage to the connectors in the circuit
  4. Issues with the airbag control module
  5. Impact or damage to the right side of the vehicle triggering the code

Symptoms of B1940 2016 Toyota RAV4

  1. Airbag warning light illuminated on the dashboard
  2. Inability to turn off the airbag system
  3. Intermittent or non-functioning airbag deployment
  4. Fault codes related to the SRS system stored in the vehicle's computer
  5. Loss of power to the airbag system

How to Fix B1940 2016 Toyota RAV4

  1. Begin by diagnosing the specific cause of the B1940 code using a diagnostic scanner to pinpoint the exact issue.
  2. Inspect the wiring harness, connectors, and components related to the selectable force limiter squib for any signs of damage, corrosion, or loose connections.
  3. Replace the faulty selectable force limiter squib component if necessary.
  4. Clear the fault codes from the vehicle's computer and reset the airbag system.
  5. Test the airbag system to ensure proper functionality and to verify that the B1940 code does not reappear.

Cost to Fix B1940 2016 Toyota RAV4

The cost of repairing a short in the Selectable Force Limiter Squib Right Circuit can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair for this type of problem can range from $200 to $500, including parts and labor. However, it is essential to note that prices can fluctuate based on the location of the repair shop, the make and model of the vehicle, and the extent of the damage. It is recommended to consult with a professional mechanic to obtain an accurate estimate for the repair. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may differ based on the factors mentioned above.

Need more information about the B1940 2016 Toyota RAV4 code?

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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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1940 2016 Toyota RAV4 Code

1. What does the OBDII code B1940 mean for a 2016 Toyota RAV4?

The code B1940 indicates a short circuit in the Selectable Force Limiter Squib (Right) circuit, which is part of the airbag system.

2. What are the common symptoms of code B1940 in a 2016 Toyota RAV4?

The most common symptoms include an illuminated airbag warning light and potentially a disabled passenger-side airbag system.

3. What causes the B1940 code to appear in a 2016 Toyota RAV4?

Common causes include damaged wiring, a short circuit in the airbag system, a faulty clock spring, or a defective airbag control module.

4. Is it safe to drive with the B1940 code active in my 2016 Toyota RAV4?

No, it’s not recommended to drive with this code active because the airbag system may be compromised and may not deploy in a collision.

5. How can I diagnose the B1940 code in a 2016 Toyota RAV4?

Diagnosis involves inspecting the wiring and connectors for damage or corrosion, checking the clock spring for faults, and testing the airbag control module.

6. Can a blown fuse cause the B1940 code in a 2016 Toyota RAV4?

While unlikely, a blown fuse in the airbag system circuitry could contribute to the issue. It’s important to inspect the fuse related to the SRS system.

7. How is the B1940 code typically repaired in a 2016 Toyota RAV4?

Repairs may include replacing damaged wiring, repairing the clock spring, or replacing the airbag control module if it’s found to be faulty.

8. What tools are needed to fix the B1940 code in a 2016 Toyota RAV4?

You’ll need an OBDII scanner, a multimeter for testing circuits, and access to the vehicle’s wiring diagram to trace the issue.

9. How much does it cost to repair the B1940 code in a 2016 Toyota RAV4?

Repair costs can vary widely, ranging from $100 to $1,000 depending on the root cause, such as replacing a clock spring or airbag module.

10. Can I clear the B1940 code without fixing the issue in my 2016 Toyota RAV4?

Clearing the code without addressing the root cause will not resolve the problem. The airbag warning light will likely return, and the system may remain inoperative.

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