B1816 Scion 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 Scion 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.
Code B1816 Scion Description
What are the Possible Causes of the DTC B1816 Scion?
- 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 Scion?
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 Scion 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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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 B1816 Scion Code
1. What does the OBDII code B1816 mean on a Scion?
The B1816 code indicates an "Open in Front Passenger Side Squib 2nd Step Circuit," which relates to a fault in the airbag system for the front passenger seat.
2. What are the common symptoms of the B1816 code?
The most common symptoms include an illuminated airbag warning light on the dashboard and the airbag system being disabled or non-functional.
3. What causes the B1816 code to trigger?
The code is typically caused by a damaged or disconnected wiring harness, a faulty airbag module, corroded connectors, or an issue with the clock spring.
4. Can I drive my Scion with the B1816 code active?
While the vehicle may still operate, driving with this code active is not recommended, as it means the airbag system may not deploy properly in an accident.
5. How is the B1816 code diagnosed?
A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage or corrosion, and test the resistance in the squib circuit to identify the fault.
6. What repairs are needed to fix the B1816 code?
Repairs may include reconnecting or replacing damaged wiring, cleaning corroded connectors, repairing or replacing the clock spring, or replacing the airbag module if defective.
7. How much does it cost to fix the B1816 code on a Scion?
Repair costs can vary but typically range from $100 to $500 depending on whether it's a wiring issue or if major components like the airbag module need replacement.
8. Can I reset the B1816 code without repairs?
Resetting the code without addressing the underlying issue is not recommended, as the airbag system will remain compromised and the code will likely return.
9. How can I prevent the B1816 code from occurring?
Regularly inspect the airbag system wiring and connectors for wear or damage, and avoid tampering with airbag-related components without proper knowledge or tools.
10. Does the B1816 code affect other systems in my Scion?
No, the B1816 code specifically affects the airbag system. Other vehicle systems should function normally, but the airbag system will be disabled until the issue is resolved.
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