AutoCodes – Lexus – B19A1 Lexus

B19A1 Lexus Code - Open In Front Active Headrest Squib RH Circuit

Quick Answer

The Front Active Headrest Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and the Active Headrest Inflator RH. Common causes include Faulty Active Headrest Inflator Assembly Right (RH) (Front Active Headrest Squib RH), Active Headrest Inflator Assembly Right (RH) harness is open or shorted, Active Headrest Inflator Assembly Right (RH) 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: B19A1 Lexus indicates Open In Front Active Headrest Squib RH Circuit.
Common causes: Common causes include Faulty Active Headrest Inflator Assembly Right (RH) (Front Active Headrest Squib RH), Active Headrest Inflator Assembly Right (RH) harness is open or shorted, Active Headrest Inflator Assembly Right (RH) 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 2,075

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B19A1 Lexus Description

The Front Active Headrest Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and the Active Headrest Inflator RH. 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 RH Circuit.

OBDII Code B19A1 Lexus - Open In Front Active Headrest Squib RH Circuit - AutoCodes.com — B19A1 Lexus Code - Open In Front Active Headrest Squib RH Circuit

What does this mean?

What are the Possible Causes of the DTC B19A1 Lexus?

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

How to Fix the DTC B19A1 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 B19A1 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 B19A1 Lexus code?

Need more information on how to fix the B19A1 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B19A1 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 B19A1 Lexus Code

1. What are common symptoms of an open circuit in the front active headrest squib RH circuit (OBDII code B19A1) in a Lexus?

- Common symptoms include the airbag warning light illuminating on the dashboard, non-deployment of the front passenger airbag during a collision, and potential issues with the headrest functionality.

2. What are possible causes of an open circuit in the front active headrest squib RH circuit in a Lexus?

- Potential causes could include damaged wiring, faulty connectors, a defective squib (airbag inflator), or issues with the airbag control module.

3. How can I diagnose an open circuit in the front active headrest squib RH circuit in my Lexus?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific B19A1 trouble code, followed by inspecting the wiring, connectors, and components related to the front active headrest squib RH circuit.

4. Can I repair an open circuit in the front active headrest squib RH circuit myself?

- Repairing this issue often requires specialized knowledge and tools due to the safety implications of airbag systems. It is recommended to seek assistance from a qualified automotive technician or Lexus dealership.

5. Are there any safety concerns associated with an open circuit in the front active headrest squib RH circuit?

- Yes, an open circuit in the airbag system can compromise the effectiveness of the front passenger airbag during a collision, potentially increasing the risk of injury to the occupant. It is important to address this issue promptly.

6. How much does it typically cost to repair an open circuit in the front active headrest squib RH circuit in a Lexus?

- Repair costs can vary depending on the extent of the damage and the specific components that need to be replaced. It is advisable to obtain estimates from reputable repair shops or dealerships.

7. Can driving with the OBDII code B19A1 present cause any long-term damage to my Lexus?

- While driving with this code present may not directly cause damage to the vehicle, it is important to address airbag system issues promptly to ensure the safety features function as intended in the event of a collision.

8. How long does it typically take to repair an open circuit in the front active headrest squib RH circuit?

- The repair time can vary based on the complexity of the issue and the availability of parts. In some cases, the repair can be completed within a few hours, while more extensive repairs may take longer.

9. Can resetting the OBDII system clear the B19A1 trouble code related to the front active headrest squib RH circuit?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the open circuit is not addressed, the code is likely to reappear. It is essential to diagnose and repair the root cause of the problem.

10. Are there any recalls or technical service bulletins related to the B19A1 code in Lexus vehicles?

- It is advisable to check with a Lexus dealership or the manufacturer's website for any recalls or technical service bulletins related to the specific OBDII code B19A1 in Lexus vehicles, as they may provide valuable information or assistance.