AutoCodes – Lexus – B167B Lexus

B167B Lexus Code - Lost Communication with Front Door Pressure Sensor LH

Quick Answer

The Side Collision Sensor Left (LH) circuit consists of the Airbag Sensor Assembly, Door Side Airbag Sensor Left (LH) and Side No. Common causes include Side Collision Sensor Left harness is open or shorted, Side Collision Sensor Left circuit poor electrical connection, Faulty Airbag Sensor Assembly. 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: B167B Lexus indicates Lost Communication with Front Door Pressure Sensor LH.
Common causes: Common causes include Side Collision Sensor Left harness is open or shorted, Side Collision Sensor Left circuit poor electrical connection, Faulty Airbag Sensor Assembly.
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 40

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 05, 2025

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code B167B Lexus Description

The Side Collision Sensor Left (LH) circuit consists of the Airbag Sensor Assembly, Door Side Airbag Sensor Left (LH) and Side No. 2 Airbag Sensor Left (LH). The Door Side Airbag Sensor Left and Side No. 2 Airbag Sensor Left detect impacts to the vehicle and send signals to the Airbag Sensor Assembly to determine if the airbags and pretensioners should be deployed. The Diagnostic Trouble Code (DTC) is stored when a malfunction is detected in the Side Collision Sensor Left circuit.

OBDII Code B167B Lexus - Lost Communication with Front Door Pressure Sensor LH - AutoCodes.com — B167B Lexus Code - Lost Communication with Front Door Pressure Sensor LH

What does this mean?

What are the Possible Causes of the DTC B167B Lexus?

Side Collision Sensor Left harness is open or shorted
Side Collision Sensor Left circuit poor electrical connection
Faulty Airbag Sensor Assembly
Faulty Door Side Airbag Sensor Left (LH)
Faulty Side No. 2 Airbag Sensor Left (LH)

How to Fix the DTC B167B 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 B167B 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.

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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.