AutoCodesToyota – B1816 2016 Toyota RAV4

B1816 2016 Toyota RAV4 Code - Open In Front Passenger Side Squib 2nd Step Circuit

Quick Answer

The Front Passenger Side Squib 2nd Step Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib 2nd Step), Front Passenger Airbag Assembly harness is open or shorted. 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
B1816 2016 Toyota RAV4 indicates Open In Front Passenger Side Squib 2nd Step Circuit.
Common causes
Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib 2nd Step), Front Passenger Airbag Assembly harness is open or shorted.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 479
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 27, 2022
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Code B1816 2016 Toyota RAV4 Description

The Front Passenger Side Squib 2nd Step Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. The circuit signals the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when a malfunction is detected in the Front Passenger Side Squib 2nd Step Circuit.
OBDII Code B1816 2016 Toyota RAV4 - Open In Front Passenger Side Squib 2nd Step Circuit - AutoCodes.com
B1816 2016 Toyota RAV4 Code - Open In Front Passenger Side Squib 2nd Step Circuit

What are the Possible Causes of the DTC B1816 2016 Toyota RAV4?

  • Instrument panel wire
  • Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib 2nd Step)
  • Front Passenger Airbag Assembly harness is open or shorted
  • Front Passenger Airbag Assembly circuit poor electrical connection
  • Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1816 2016 Toyota RAV4?

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 B1816 2016 Toyota RAV4 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 B1816 2016 Toyota RAV4 code?

Need more information on how to fix the B1816 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1816 2016 Toyota RAV4 code diagnosed by a professional: Find a repair shop in your area

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 B1816 2016 Toyota RAV4 Code

1. What does the OBDII code B1816 indicate on a 2016 Toyota RAV4?

The code B1816 indicates an issue with the "Open in Front Passenger Side Squib 2nd Step Circuit," which refers to a malfunction in the airbag deployment system for the front passenger seat.

2. What are common symptoms of the B1816 code in a 2016 Toyota RAV4?

Common symptoms include the airbag warning light staying illuminated on the dashboard and potential failure of the passenger side airbag to deploy in the event of an accident.

3. What can cause the B1816 code to appear on a 2016 Toyota RAV4?

Causes can include a loose or corroded connector, a broken wire in the squib circuit, or a faulty airbag control module.

4. How is the B1816 code diagnosed in a 2016 Toyota RAV4?

Diagnosis typically involves using an OBD-II scanner to confirm the code, visually inspecting the wiring and connectors for damage, and testing the resistance of the squib circuit to ensure it is within specifications.

5. What are the steps to repair the issue associated with the B1816 code on a 2016 Toyota RAV4?

Repair steps may include tightening or replacing connectors, repairing or replacing damaged wires, and if necessary, replacing the airbag control module.

6. Is it safe to drive a 2016 Toyota RAV4 with the B1816 code?

Driving with this code is not recommended as it indicates a potential malfunction in the airbag system, which could compromise passenger safety in a crash.

7. Can I fix the B1816 code issue by myself?

It is possible for individuals with automotive repair experience to address this issue, but due to the complexity and safety concerns related to the airbag system, it is often recommended to seek professional assistance.

8. What tools are required to diagnose the B1816 code on a 2016 Toyota RAV4?

Tools required include an OBD-II scanner, a digital multimeter, and possibly a wiring diagram to help trace circuit connections.

9. What should I do if the B1816 code reappears after repairs on my 2016 Toyota RAV4?

If the code reappears, further diagnostics are needed to check for additional issues in the circuit or potential errors in the initial repair, such as overlooked damaged components or improper connections.

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