B1858 Scion Code - Short To Positive In Rear Side Squib Left Circuit
Quick Answer
The Rear Side Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Rear Seat Side Airbag Assembly Left (LH). Common causes include Faulty Rear Seat Side Airbag Assembly Left (LH) (Rear Side Squib Left Circuit), Rear Seat Side Airbag Assembly Left harness is open or shorted, Rear Seat Side Airbag Assembly 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
- B1858 Scion indicates Short To Positive In Rear Side Squib Left Circuit.
- Common causes
- Common causes include Faulty Rear Seat Side Airbag Assembly Left (LH) (Rear Side Squib Left Circuit), Rear Seat Side Airbag Assembly Left harness is open or shorted, Rear Seat Side Airbag Assembly 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 B1858 Scion Description
What are the Possible Causes of the DTC B1858 Scion?
- Faulty Rear Seat Side Airbag Assembly Left (LH) (Rear Side Squib Left Circuit)
- Rear Seat Side Airbag Assembly Left harness is open or shorted
- Rear Seat Side Airbag Assembly Left circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1858 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 B1858 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 B1858 Scion Code
1. What are the common symptoms of OBDII code B1858 in a Scion related to a short to positive in the rear side squib left circuit?
- Common symptoms include the airbag warning light staying illuminated on the dashboard and potential issues with the airbag system's functionality.
2. What could cause the OBDII code B1858 in a Scion indicating a short to positive in the rear side squib left circuit?
- Possible causes include damaged wiring, a faulty airbag squib (inflator), or a problem with the airbag control module.
3. How can I diagnose the OBDII code B1858 in a Scion for a short to positive in the rear side squib left circuit?
- Diagnosis typically involves using a scan tool to retrieve the trouble code and inspecting the wiring, connectors, and components associated with the rear side squib left circuit.
4. Is it safe to drive my Scion with the OBDII code B1858 triggered for a short to positive in the rear side squib left circuit?
- It is not recommended to drive the vehicle with this code active, as it indicates a potential issue with the airbag system's safety function.
5. What are the repair options for addressing OBDII code B1858 in a Scion for a short to positive in the rear side squib left circuit?
- Repair options may include repairing or replacing damaged wiring, replacing the airbag squib, or addressing any issues with the airbag control module.
6. Can I reset the OBDII code B1858 in my Scion related to a short to positive in the rear side squib left circuit without fixing the underlying issue?
- Simply clearing the code without addressing the root cause will likely result in the code returning once the issue is detected again during system checks.
7. How much does it typically cost to repair OBDII code B1858 in a Scion for a short to positive in the rear side squib left circuit?
- The cost of repair can vary depending on the specific issue, but it may involve labor costs for diagnosis and repair, as well as the price of any necessary parts.
8. Are there any safety precautions I should take when working on the airbag system to resolve OBDII code B1858 in my Scion?
- Safety precautions include disconnecting the vehicle's battery, waiting for the system to discharge, and following proper procedures to avoid accidental airbag deployment.
9. Can a DIY enthusiast with some automotive experience repair OBDII code B1858 in a Scion for a short to positive in the rear side squib left circuit?
- While some simple repairs like checking connections and fuses can be done by DIY enthusiasts, more complex issues with the airbag system may require professional assistance.
10. How long does it usually take to repair OBDII code B1858 in a Scion related to a short to positive in the rear side squib left circuit?
- The repair time can vary depending on the exact cause of the issue and the complexity of the repair needed, but it may range from a few hours to a full day in some cases.
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