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Engine-Codes – Generic – B0116

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

Quick Answer

The B0116 diagnostic trouble code indicates that there is an open in the left-side airbag module squib circuit. Common causes include Damaged wiring or connectors in the airbag circuit, Faulty airbag module squib, Corrosion or moisture in the airbag system components. 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 indicates Open In Left-Side Air Bag Module Squib Circuit.
Common causes
Common causes include Damaged wiring or connectors in the airbag circuit, Faulty airbag module squib, Corrosion or moisture in the airbag system components.
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 Aug 19, 2024
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Code B0116 Description

The B0116 diagnostic trouble code indicates that there is an open in the left-side airbag module squib circuit. This means that there is a break or discontinuity in the electrical circuit that controls the deployment of the airbag on the left side of the vehicle. The airbag squib is a component that generates the gas necessary to inflate the airbag in the event of a collision, and an open circuit can prevent the airbag from deploying properly or at all.

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

Common Causes of B0116

  1. Damaged wiring or connectors in the airbag circuit.
  2. Faulty airbag module squib.
  3. Corrosion or moisture in the airbag system components.
  4. Impact or collision that damaged the airbag system.
  5. Electrical issues in the vehicle's wiring harness.

Symptoms of B0116

  1. Airbag warning light illuminated on the dashboard.
  2. SRS (Supplemental Restraint System) warning message displayed on the instrument panel.
  3. Inability to turn off the airbag warning light even after resetting the system.
  4. The airbag may not deploy in a collision.

How to Fix B0116

  1. Begin by disconnecting the vehicle's battery to prevent accidental deployment of the airbag.
  2. Inspect the wiring and connectors in the left-side airbag circuit for any damage, corrosion, or loose connections.
  3. Test the airbag module squib for continuity and resistance to determine if it is faulty.
  4. Replace any damaged wiring, connectors, or the airbag module squib as necessary.
  5. Reconnect the battery and clear the diagnostic trouble code to reset the system.

Cost to Fix B0116

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 cost of parts and labor. In general, this repair can range from $200 to $500, including parts and labor. However, prices may differ based on the vehicle make and model, the location of the repair shop, and the specific diagnosis and labor rates. It is recommended to get quotes from local auto repair shops for a more accurate estimate.

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Code B0116 Information for Specific Makes

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 Code

1. What are common symptoms of OBDII code B0116?

Symptoms may include an illuminated airbag warning light on the dashboard, the airbag system not deploying in the event of an accident, and diagnostic trouble codes related to the left-side airbag module squib circuit.

2. What does OBDII code B0116 indicate?

OBDII code B0116 indicates an open circuit in the left-side airbag module squib circuit, which means there is an interruption in the electrical connection.

3. What are possible causes of OBDII code B0116?

Possible causes include a faulty left-side airbag module, damaged wiring or connectors in the squib circuit, a blown fuse, or a problem with the airbag control module.

4. How can I diagnose the issue related to OBDII code B0116?

Diagnosis typically involves using a scan tool to read the specific trouble code, inspecting the wiring and connectors for any visible damage, and conducting continuity tests to identify the open circuit.

5. Can I drive my vehicle with OBDII code B0116?

It is not recommended to drive the vehicle with an active airbag system fault code like B0116, as it may compromise the safety features of the vehicle in the event of a collision.

6. How can I repair OBDII code B0116?

Repair options may include replacing the left-side airbag module, repairing or replacing damaged wiring or connectors, resetting the airbag control module, and clearing the trouble code with a scan tool.

7. Is it safe to repair OBDII code B0116 on my own?

Due to the critical nature of the airbag system, it is recommended to have the issue diagnosed and repaired by a qualified mechanic or technician with experience in handling airbag systems.

8. Will OBDII code B0116 reset on its own after repair?

After the underlying issue causing OBDII code B0116 is repaired, the code can be cleared using a scan tool, and the airbag system should reset itself once the repair is successful.

9. How much does it cost to fix OBDII code B0116?

Repair costs for OBDII code B0116 can vary depending on the specific cause of the issue, the parts needed for repair, and the labor rates of the repair shop. It is recommended to obtain estimates from different mechanics.

10. Can OBDII code B0116 affect the overall safety of the vehicle?

Yes, OBDII code B0116 can affect the overall safety of the vehicle as it indicates a fault in the airbag system, which is a critical safety feature designed to protect occupants in the event of a collision.

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