B1851 Scion Code - Open In Rear Side Squib Right Circuit
Quick Answer
The Rear Side Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and the Rear Seat Side Airbag Assembly Right (RH). Common causes include Faulty Rear Seat Side Airbag Assembly Right (RH) (Rear Side Squib Right Circuit), Rear Seat Side Airbag Assembly Right Left harness is open or shorted, Rear Seat Side Airbag Assembly Right Left circuit poor electrical connection. 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 Faulty Rear Seat Side Airbag Assembly Right (RH) (Rear Side Squib Right Circuit), Rear Seat Side Airbag Assembly Right Left harness is open or shorted, Rear Seat Side Airbag Assembly Right Left circuit poor electrical connection.
- 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 B1851 Scion Description
What are the Possible Causes of the DTC B1851 Scion?
- Faulty Rear Seat Side Airbag Assembly Right (RH) (Rear Side Squib Right Circuit)
- Rear Seat Side Airbag Assembly Right Left harness is open or shorted
- Rear Seat Side Airbag Assembly Right Left circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1851 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 B1851 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 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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