AutoCodesScion – B1860 Scion

B1860 Scion Code - Short in Driver Side Knee Airbag Squib Circuit

Quick Answer

The Driver Side Knee Airbag Squib Circuit consists of the Center Airbag Sensor Assembly and the Driver Side Knee Airbag Assembly. Common causes include Faulty Driver Side Knee Airbag Assembly (Driver Side Knee Squib), Driver Side Knee Airbag Assembly harness is open or shorted, Driver Side Knee Airbag Assembly 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
B1860 Scion indicates Short in Driver Side Knee Airbag Squib Circuit.
Common causes
Common causes include Faulty Driver Side Knee Airbag Assembly (Driver Side Knee Squib), Driver Side Knee Airbag Assembly harness is open or shorted, Driver Side Knee Airbag Assembly 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.
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Code Popularity 719
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 02, 2022
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Code B1860 Scion Description

The Driver Side Knee Airbag Squib Circuit consists of the Center Airbag Sensor Assembly and the Driver Side Knee Airbag Assembly. This circuit instructs the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is stored when a malfunction is detected in the Driver Side Knee Airbag Squib Circuit.
OBDII Code B1860 Scion - Short in Driver Side Knee Airbag Squib Circuit - AutoCodes.com
B1860 Scion Code - Short in Driver Side Knee Airbag Squib Circuit

What are the Possible Causes of the DTC B1860 Scion?

  • Faulty Driver Side Knee Airbag Assembly (Driver Side Knee Squib)
  • Driver Side Knee Airbag Assembly harness is open or shorted
  • Driver Side Knee Airbag Assembly circuit poor electrical connection
  • Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1860 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 B1860 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.

Need more information about the B1860 Scion code?

Need more information on how to fix the B1860 Scion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1860 Scion 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 B1860 Scion Code

What does OBDII code B1860 indicate?

OBDII code B1860 indicates a short in the driver side knee airbag squib circuit, meaning there is an electrical issue affecting the airbag system's ability to deploy properly.

What are common symptoms of the B1860 code?

Common symptoms include the airbag warning light being illuminated on the dashboard and potential issues with the driver’s knee airbag deployment during an accident.

What could cause the B1860 code to trigger?

The B1860 code can be triggered by a short circuit in the wiring, a faulty knee airbag module, or issues with the airbag control module itself.

How can I diagnose the B1860 code?

To diagnose the B1860 code, use an OBD-II scanner to confirm the code, then visually inspect the wiring and connectors for damage, and test the knee airbag module and control unit for faults.

Is it safe to drive with the B1860 code present?

It is not safe to drive with the B1860 code present, as the airbag system may not function correctly in the event of a collision, increasing the risk of injury.

What are some repair tips for fixing the B1860 code?

Repair tips include checking and repairing any damaged wiring or connectors, replacing the knee airbag module if it is faulty, and clearing the code after repairs to see if it returns.

Can I reset the B1860 code myself?

Yes, you can reset the B1860 code using an OBD-II scanner, but it is essential to address the underlying issue first to prevent the code from reappearing.

How much might it cost to repair the B1860 code?

Repair costs can vary widely, ranging from $50 for simple wiring repairs to several hundred dollars if the knee airbag module needs to be replaced.

Will disconnecting the battery clear the B1860 code?

Disconnecting the battery may temporarily clear the B1860 code, but it will not fix the underlying issue, and the code will likely return once the system is reconnected and checked.

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