AutoCodesLexus – B19A6 Lexus

B19A6 Lexus Code - Open In Front Active Headrest Squib LH Circuit

Quick Answer

The Front Active Headrest Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Active Headrest Inflator LH. Common causes include Faulty Active Headrest Inflator Assembly Left (LH) (Front Active Headrest Squib LH), Active Headrest Inflator Assembly Left (LH) harness is open or shorted, Active Headrest Inflator Assembly Left (LH) 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
B19A6 Lexus indicates Open In Front Active Headrest Squib LH Circuit.
Common causes
Common causes include Faulty Active Headrest Inflator Assembly Left (LH) (Front Active Headrest Squib LH), Active Headrest Inflator Assembly Left (LH) harness is open or shorted, Active Headrest Inflator Assembly Left (LH) 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 2,157
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 02, 2019
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Code B19A6 Lexus Description

The Front Active Headrest Squib Left (LH) Circuit consists of the Center Airbag Sensor Assembly and the Active Headrest Inflator LH. This circuit instructs the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when a malfunction is detected in the Front Active Headrest Squib LH Circuit.
OBDII Code B19A6 Lexus - Open In Front Active Headrest Squib LH Circuit - AutoCodes.com
B19A6 Lexus Code - Open In Front Active Headrest Squib LH Circuit

What are the Possible Causes of the DTC B19A6 Lexus?

  • Faulty Active Headrest Inflator Assembly Left (LH) (Front Active Headrest Squib LH)
  • Active Headrest Inflator Assembly Left (LH) harness is open or shorted
  • Active Headrest Inflator Assembly Left (LH) circuit poor electrical connection
  • Faulty Center Airbag Sensor Assembly

How to Fix the DTC B19A6 Lexus?

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 B19A6 Lexus 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 B19A6 Lexus code?

Need more information on how to fix the B19A6 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B19A6 Lexus 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 B19A6 Lexus Code

1. What are the common symptoms of OBDII code B19A6 in a Lexus related to the "Open In Front Active Headrest Squib LH Circuit"?

- Common symptoms include a malfunctioning or non-deploying active headrest on the driver's side.

2. What are the potential causes of the OBDII code B19A6 in a Lexus?

- The code is typically triggered by an open circuit in the front active headrest squib LH circuit, which could be due to wiring issues or a faulty component.

3. How can I diagnose the root cause of OBDII code B19A6 in my Lexus?

- Diagnosis involves inspecting the wiring harness for any damage, checking the connectors for proper connection, and testing the front active headrest squib LH circuit for continuity.

4. Can I repair the "Open In Front Active Headrest Squib LH Circuit" issue in my Lexus by myself?

- If you have experience working with automotive electrical systems, you may be able to repair the issue yourself by addressing any wiring faults or replacing the faulty component.

5. Is it safe to drive my Lexus with OBDII code B19A6 present?

- It is not recommended to drive the vehicle with this code active, as the active headrest may not deploy properly in the event of a collision, compromising occupant safety.

6. How much does it typically cost to repair the "Open In Front Active Headrest Squib LH Circuit" issue in a Lexus?

- The cost of repair can vary depending on the underlying cause, but it may involve replacing damaged wiring or a faulty component, which could range from a few hundred to a thousand dollars.

7. Can resetting the OBDII code B19A6 in my Lexus make the issue go away temporarily?

- Resetting the code may temporarily clear the fault, but if the root cause is not addressed, the code is likely to reappear once the issue is detected again.

8. Are there any safety implications associated with the "Open In Front Active Headrest Squib LH Circuit" issue in a Lexus?

- Yes, the active headrest system is designed to enhance occupant safety in the event of a rear-end collision, so it's important to address the issue promptly to ensure proper functionality.

9. Will the OBDII code B19A6 in my Lexus cause the airbag system to be disabled?

- The code specifically relates to the front active headrest squib LH circuit and may not directly affect the airbag system, but it's essential to address the issue to maintain overall safety systems.

10. How long does it typically take to repair the "Open In Front Active Headrest Squib LH Circuit" issue in a Lexus?

- The repair time can vary depending on the extent of the wiring or component replacement needed, but it may take a few hours to a full day for a skilled technician to complete the repair.

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