B1851 Scion Code - Open In Rear Side Squib Right Circuit
Quick Answer
The B1851 Scion code indicates an open circuit in the rear side squib right circuit. Common causes include Damaged wiring or connectors in the rear side squib right circuit, Blown fuse related to the side airbag system, Faulty rear side squib unit. 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
- B1851 Scion indicates Open In Rear Side Squib Right Circuit.
- Common causes
- Common causes include Damaged wiring or connectors in the rear side squib right circuit, Blown fuse related to the side airbag system, Faulty rear side squib unit.
- 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.
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Code B1851 Scion Description
The B1851 Scion code indicates an open circuit in the rear side squib right circuit. The side squib, also known as an airbag squib, is a pyrotechnic device used to deploy the side airbag in the event of a collision. An open circuit in this system means that there is a break or interruption in the electrical connection, preventing the side airbag from deploying properly.
Common Causes of B1851 Scion
- Damaged wiring or connectors in the rear side squib right circuit.
- Blown fuse related to the side airbag system.
- Faulty rear side squib unit.
- Corrosion in the electrical connections.
- Impact damage to the side of the vehicle affecting the side squib system.
Symptoms of B1851 Scion
- Airbag warning light illuminated on the dashboard.
- Side airbag system failure message displayed on the instrument cluster.
- Side airbag not deploying during a collision.
- Diagnostic trouble code B1851 stored in the vehicle's computer system.
How to Fix B1851 Scion
- Begin by diagnosing the specific cause of the open circuit, using a scan tool to retrieve the trouble code and inspecting the wiring and connectors for damage.
- Replace any damaged wiring or connectors in the rear side squib right circuit.
- Check and replace any blown fuses related to the side airbag system.
- If the issue persists, replace the rear side squib unit itself.
- Clear the diagnostic trouble code from the vehicle's computer system and perform a thorough test to ensure the side airbag system is functioning properly.
Cost to Fix B1851 Scion
The cost of repairing an open circuit in the rear side squib right circuit can vary depending on the specific cause of the issue and the labor rates in your area. Generally, the parts required for this repair, such as wiring, connectors, fuses, or a new side squib unit, can range from $100 to $500. Labor costs can add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair. Overall, you can expect to pay anywhere from $200 to $800 for this repair. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.
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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 B1851 Scion Code
1. What does OBDII code B1851 mean on a Scion?
Code B1851 indicates an "Open in Rear Side Squib Right Circuit," which means there's an issue with the airbag system, specifically on the right rear side squib circuit.
2. What are the symptoms of code B1851 in a Scion?
Common symptoms include the airbag warning light being illuminated and the airbag system being disabled, potentially compromising passenger safety.
3. What causes the B1851 code in a Scion?
The code is often caused by damaged wiring, loose or corroded electrical connections, a faulty airbag module, or a defective rear side squib.
4. Is it safe to drive a Scion with code B1851?
While the vehicle may still drive normally, it is unsafe because the airbag system might not deploy properly in the event of an accident.
5. How do you diagnose the B1851 code in a Scion?
Diagnosis typically involves using an OBDII scanner to confirm the code, inspecting the wiring and connectors in the rear side squib circuit, and testing the airbag control module.
6. Can I fix the B1851 code on my Scion myself?
If you have experience working with electrical systems, you may be able to repair damaged wiring or connections. However, airbag systems are sensitive and should preferably be handled by a professional.
7. How much does it cost to repair the B1851 code in a Scion?
Repair costs can vary depending on the issue but typically range from $100 to $500, depending on whether wiring repairs or module replacements are needed.
8. What tools are needed to repair the B1851 code in a Scion?
You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and possibly wiring repair tools like connectors and heat shrink tubing.
9. Can a faulty airbag module cause the B1851 code?
Yes, a defective airbag control module can cause this code if it fails to communicate properly with the rear side squib circuit.
10. Do I need to clear the B1851 code after repairs?
Yes, after making repairs, use an OBDII scanner to clear the code. If the issue is resolved, the airbag warning light should turn off.
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