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B0116 Toyota Code - Open In Left-Side Air Bag Module Squib Circuit

Quick Answer

The B0116 diagnostic trouble code for Toyota vehicles indicates an open in the left-side airbag module squib circuit. Common causes include Damaged wiring or connectors in the left-side airbag circuit, Faulty airbag squib in the left-side airbag module, Corrosion or poor connections in the airbag system. 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
B0116 Toyota indicates Open In Left-Side Air Bag Module Squib Circuit.
Common causes
Common causes include Damaged wiring or connectors in the left-side airbag circuit, Faulty airbag squib in the left-side airbag module, Corrosion or poor connections in the airbag system.
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 12, 2024
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Code B0116 Toyota Description

The B0116 diagnostic trouble code for Toyota vehicles indicates an open in the left-side airbag module squib circuit. This means that there is a break or interruption in the electrical circuit that controls the deployment of the airbag in the left side of the vehicle. The airbag squib is a component that initiates the deployment of the airbag when a collision is detected. An open circuit in this system can prevent the airbag from deploying in the event of a crash, compromising the safety of the vehicle occupants.

OBDII Code B0116 Toyota - Open In Left-Side Air Bag Module Squib Circuit
B0116 Toyota Code - Open In Left-Side Air Bag Module Squib Circuit

Common Causes of B0116 Toyota

  1. Damaged wiring or connectors in the left-side airbag circuit.
  2. Faulty airbag squib in the left-side airbag module.
  3. Corrosion or poor connections in the airbag system.
  4. Impact or collision that damaged the airbag system components.
  5. Faulty airbag control module.

Symptoms of B0116 Toyota

  1. Airbag warning light illuminated on the dashboard.
  2. Inability to deploy the left-side airbag in a collision.
  3. Faulty horn operation due to the shared circuit with the airbag system.
  4. Loss of communication with the airbag control module.

How to Fix B0116 Toyota

  1. Begin by disconnecting the vehicle's battery to prevent accidental airbag deployment.
  2. Inspect the wiring and connectors in the left-side airbag circuit for any damage or corrosion. Repair or replace as necessary.
  3. Check the airbag squib in the left-side airbag module for proper functioning. Replace if faulty.
  4. Clear the diagnostic trouble codes from the vehicle's computer using a scan tool.
  5. Reconnect the battery and test the airbag system to ensure proper operation.

Cost to Fix B0116 Toyota

The cost of repairing an open in the left-side airbag module squib circuit can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair cost for this issue can range from $200 to $500, including parts and labor. However, it is essential to note that labor rates at auto repair shops can vary significantly, so it is advisable to obtain quotes from multiple shops to ensure a competitive price. Additionally, the cost may be higher if the airbag system components need to be replaced entirely.

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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 B0116 Toyota Code

1. What are the common symptoms of OBDII code B0116 in a Toyota related to an open in the left-side airbag module squib circuit?

- Common symptoms include the airbag warning light illuminating on the dashboard and the airbag system possibly being disabled.

2. What are the possible causes of an open in the left-side airbag module squib circuit in a Toyota triggering code B0116?

- The causes can range from a faulty airbag module to damaged wiring or connectors in the circuit.

3. How can I diagnose the issue causing OBDII code B0116 in a Toyota with an open in the left-side airbag module squib circuit?

- Diagnosis typically involves checking the wiring, connectors, and components in the circuit for any signs of damage or disconnection.

4. Can I continue driving my Toyota with OBDII code B0116 indicating an open in the left-side airbag module squib circuit?

- It is not recommended to drive the vehicle with this code active, as it signifies a potential issue with the airbag system's functionality and safety.

5. How can I repair OBDII code B0116 related to an open in the left-side airbag module squib circuit in my Toyota?

- Repairing this code usually involves locating and fixing the open circuit, replacing damaged components, and clearing the error code with a diagnostic tool.

6. Is it safe to attempt DIY repairs for OBDII code B0116 in a Toyota caused by an open in the left-side airbag module squib circuit?

- It is recommended to have this issue addressed by a qualified technician or service center due to the critical nature of the airbag system.

7. Are there any recalls or technical service bulletins related to OBDII code B0116 in Toyota vehicles?

- It's advisable to check with Toyota dealership or official sources for any recalls or technical service bulletins concerning this specific OBDII code.

8. How do I prevent OBDII code B0116 from occurring again in my Toyota after repairing the open in the left-side airbag module squib circuit?

- Regularly inspecting and maintaining the airbag system, including checking wiring and connectors, can help prevent the recurrence of this code.

9. Can a fault in the left-side airbag module squib circuit impact the functionality of other safety systems in a Toyota?

- Yes, a fault in the airbag system can sometimes affect other safety systems, so it's crucial to address such issues promptly.

10. What is the typical cost to repair OBDII code B0116 due to an open in the left-side airbag module squib circuit in a Toyota?

- The repair cost can vary depending on the extent of the damage and the specific components that need to be replaced, so it is advisable to get a professional assessment for an accurate estimate.

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