AutoCodes – Lexus – B1807 Lexus

B1807 Lexus Code - Short To Ground In Front Passenger Side Squib Circuit

Quick Answer

The Front Passenger Side Squib Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib), Front Passenger Airbag Assembly harness is open or shorted. 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: B1807 Lexus indicates Short To Ground In Front Passenger Side Squib Circuit.
Common causes: Common causes include Instrument panel wire, Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib), Front Passenger Airbag Assembly harness is open or shorted.
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 744

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 Nov 25, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1807 Lexus Description

The Front Passenger Side Squib Circuit consists of the Center Airbag Sensor Assembly and the Front Passenger Airbag Assembly. The circuit signals the Supplemental Restraint System (SRS) to deploy when deployment conditions are met. The Diagnostic Trouble Code (DTC) is recorded when the airbag sensor assembly detects a short circuit to ground in the Front Passenger Side Squib Circuit for 0.5 seconds.

OBDII Code B1807 Lexus - Short To Ground In Front Passenger Side Squib Circuit - AutoCodes.com — B1807 Lexus Code - Short To Ground In Front Passenger Side Squib Circuit

What does this mean?

What are the Possible Causes of the DTC B1807 Lexus?

Instrument panel wire
Faulty Front Passenger Airbag Assembly (Front Passenger Side Squib)
Front Passenger Airbag Assembly harness is open or shorted
Front Passenger Airbag Assembly circuit poor electrical connection
Faulty Center Airbag Sensor Assembly

How to Fix the DTC B1807 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 B1807 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 B1807 Lexus code?

Need more information on how to fix the B1807 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1807 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 B1807 Lexus Code

1. What are the common symptoms of OBDII code B1807 in a Lexus related to a short to ground in the front passenger side squib circuit?

The common symptoms include an illuminated airbag warning light on the dashboard and potential non-deployment of the front passenger airbag in the event of a collision.

2. What are the possible causes of OBDII code B1807 in a Lexus indicating a short to ground in the front passenger side squib circuit?

Possible causes include damaged wiring in the front passenger side airbag system, a faulty squib circuit, or a defective airbag control module.

3. How can I diagnose OBDII code B1807 in a Lexus due to a short to ground in the front passenger side squib circuit?

Diagnosis involves using a scan tool to retrieve the specific fault code, inspecting the wiring harness for damage or corrosion, and testing the front passenger side airbag system components for continuity.

4. Is it safe to drive a Lexus with OBDII code B1807 indicating a short to ground in the front passenger side squib circuit?

It is not recommended to drive the vehicle with this fault code present, as it may compromise the functionality of the front passenger airbag system in the event of an accident.

5. Can I repair OBDII code B1807 related to a short to ground in the front passenger side squib circuit in a Lexus myself?

Repairing this issue typically requires advanced knowledge and specialized tools. It is recommended to have the problem diagnosed and repaired by a qualified automotive technician.

6. How much does it cost to fix OBDII code B1807 in a Lexus caused by a short to ground in the front passenger side squib circuit?

The cost of repair can vary depending on the specific underlying cause of the issue. It is advisable to obtain a professional diagnosis to determine the exact cost of fixing the problem.

7. Are there any safety precautions to take when working on OBDII code B1807 in a Lexus associated with a short to ground in the front passenger side squib circuit?

When working on the airbag system, it is crucial to disconnect the vehicle's battery and wait for at least 10 minutes before beginning any repairs to avoid accidental airbag deployment.

8. Can OBDII code B1807 in a Lexus be intermittent or sporadic in nature?

Yes, the fault causing OBDII code B1807 can sometimes be intermittent, leading to sporadic occurrences of the issue. It is essential to address the problem promptly to ensure the airbag system's reliability.

9. Will resetting the OBDII code B1807 in a Lexus resolve the issue related to a short to ground in the front passenger side squib circuit?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the fault. Proper diagnosis and repair are necessary to address the issue effectively.

10. How long does it typically take to repair OBDII code B1807 in a Lexus due to a short to ground in the front passenger side squib circuit?

The repair time can vary based on the complexity of the issue and the availability of parts. It is advisable to consult with a professional technician to get an accurate estimate of the repair duration.