AutoCodesGeneric – B1B19

B1B19 Code - Left Side Curtain Squib 1 Circuit High

Quick Answer

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. Common causes include Faulty Left Side Curtain Squib 1, Left Side Curtain Squib 1 harness is open or shorted, Left Side Curtain Squib 1 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
B1B19 indicates Left Side Curtain Squib 1 Circuit High.
Common causes
Common causes include Faulty Left Side Curtain Squib 1, Left Side Curtain Squib 1 harness is open or shorted, Left Side Curtain Squib 1 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 734
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 15, 2019
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Code B1B19 Description

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. These circuits are maintained in a floating configuration at the module (connected to neither power nor ground) as protection against inadvertent deployment. The use of the Supplemental Restraint System (SRS) Load Tool Adapter Tool provides a test point as well as a method for opening the shorting bar connections within the harness connector. The ORC sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up and every 500 ms thereafter while the ignition is on.
OBDII Code B1B19 - Left Side Curtain Squib 1 Circuit High - AutoCodes.com
B1B19 Code - Left Side Curtain Squib 1 Circuit High

What are the Possible Causes of the DTC B1B19?

  • Faulty Left Side Curtain Squib 1
  • Left Side Curtain Squib 1 harness is open or shorted
  • Left Side Curtain Squib 1 circuit poor electrical connection
  • Faulty Left Side Curtain Airbag
  • Faulty Occupant Restraint Controller (ORC)

How to Fix the DTC B1B19?

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 B1B19 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 B1B19 code?

Need more information on how to fix the B1B19 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B19 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 B1B19 Code

What does the OBDII code B1B19 mean?

The code B1B19 indicates a high circuit issue in the left side curtain airbag squib, which is part of the vehicle's airbag deployment system.

What are the common symptoms of code B1B19?

Common symptoms include an illuminated airbag warning light, and the left side curtain airbag may fail to deploy during an accident.

What causes the B1B19 code to appear?

This code is typically caused by issues such as damaged wiring, poor electrical connections, or a faulty airbag squib.

Can a blown fuse cause the B1B19 code?

Yes, a blown fuse in the airbag system could lead to a high circuit condition and trigger this code.

How do I diagnose the B1B19 code?

Start by inspecting the wiring and connectors for damage or corrosion, and use a diagnostic scan tool to confirm the code and check related components.

Is it safe to drive with the B1B19 code present?

Driving is generally safe, but the left side curtain airbag may not deploy in an accident, which could compromise safety.

How can I fix the B1B19 code?

Repairs typically involve replacing damaged wiring, fixing connections, or replacing the left side curtain airbag squib if it's faulty.

Can I reset the code without fixing the problem?

Resetting the code without addressing the underlying issue will likely cause the code to return and leave the airbag system compromised.

Are there any recalls related to the B1B19 code?

Check with your vehicle manufacturer or local dealer to see if there are any recalls affecting the airbag system.

How much does it cost to repair the B1B19 code?

The cost depends on the specific issue but typically ranges from $100 to $600 for diagnostics and repairs.

Discuss the causes and fixes for B1B19 OBDII Code

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