AutoCodes – Lexus – B19A2 Lexus

B19A2 Lexus Code - Short To Ground 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: B19A2 Lexus indicates Short To Ground 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 653

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 B19A2 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 B19A2 Lexus - Short To Ground In Front Active Headrest Squib RH Circuit - AutoCodes.com — B19A2 Lexus Code - Short To Ground In Front Active Headrest Squib RH Circuit

What does this mean?

What are the Possible Causes of the DTC B19A2 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 B19A2 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 B19A2 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 B19A2 Lexus code?

Need more information on how to fix the B19A2 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B19A2 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 B19A2 Lexus Code

1. What are the common symptoms of OBDII code B19A2 in a Lexus related to a short to ground in the front active headrest squib RH circuit?

The common symptoms include the airbag warning light illuminating on the dashboard and potential non-deployment of the front passenger airbag during a collision.

2. What are the possible causes of OBDII code B19A2 indicating a short to ground in the front active headrest squib RH circuit in a Lexus?

The code may be triggered by damaged wiring, a faulty front active headrest squib RH unit, or a short circuit within the circuit itself.

3. How can I diagnose the issue causing OBDII code B19A2 in my Lexus related to the front active headrest squib RH circuit short to ground?

A thorough inspection of the wiring harness, connectors, and the front active headrest squib RH unit is recommended. Testing for continuity and resistance can help pinpoint the exact location of the short to ground.

4. Is it safe to drive my Lexus with OBDII code B19A2 indicating a short to ground in the front active headrest squib RH circuit?

It is not recommended to drive the vehicle with this issue as the front passenger airbag may not deploy in the event of a collision, compromising occupant safety.

5. How can I repair OBDII code B19A2 in my Lexus caused by a short to ground in the front active headrest squib RH circuit?

Repair options include repairing or replacing damaged wiring, repairing or replacing the front active headrest squib RH unit, and addressing any short circuits within the circuit.

6. Can I reset OBDII code B19A2 in my Lexus after repairing the issue related to the front active headrest squib RH circuit short to ground?

Once the issue is repaired, the code can be reset using an OBDII scanner to clear the diagnostic trouble code and turn off the airbag warning light.

7. Are there any safety precautions to consider when working on the front active headrest squib RH circuit in a Lexus to resolve OBDII code B19A2?

It is crucial to disconnect the vehicle's battery before working on any airbag-related components to prevent accidental deployment. Following proper safety procedures outlined in the vehicle's service manual is recommended.

8. Can a DIY enthusiast with basic automotive knowledge repair OBDII code B19A2 related to a short to ground in the front active headrest squib RH circuit in a Lexus?

While some DIY enthusiasts may be able to diagnose and repair wiring issues, working on airbag systems requires specialized knowledge and tools. It is advisable to seek professional assistance for this type of repair.

9. How long does it typically take to repair OBDII code B19A2 caused by a short to ground in the front active headrest squib RH circuit in a Lexus?

The repair time can vary depending on the exact cause of the issue and the extent of the damage. It may take a few hours to a full day to diagnose and repair the circuit properly.

10. Are there any recalls or technical service bulletins related to OBDII code B19A2 in Lexus vehicles with issues in the front active headrest squib RH circuit?

It is advisable to check with a Lexus dealership or the manufacturer's website to see if there are any recalls or technical service bulletins related to this specific OBDII code and the front active headrest squib RH circuit in Lexus vehicles.