B1650 on 2022-2024 Lexus LX — Occupant Classification System / Paint Code Configuration (manufacturer-specific)
1 vehicles · 1 makes
Most Reported On
B1650 is an OBD-II diagnostic trouble code meaning “Occupant Classification System / Paint Code Configuration (manufacturer-specific).” B1650 is a manufacturer-specific body code whose exact meaning depends on the vehicle maker. On several vehicles it is reported as an Occupant Classification System (OCS) malfunction, the system that senses the front passenger's weight/presence to decide whether and how forcefully to deploy that airbag; on some Ford-family vehicles a B1650-range code instead refers to a paint/option configuration value. Because the definition differs by brand, confirm against the specific make. If it is OCS-related, treat it as airbag-related and have it diagnosed promptly. This code is most commonly reported on 2022-2024 Lexus LX.
Common Causes
Diagnostic Tools
To diagnose B1650, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
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LAUNCH CRP123X OBD-II Scanner
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A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
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Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
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- Oil reset, EPB, BMS, TPMS, injector coding
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FAQ
What does B1650 mean?
B1650 stands for "Occupant Classification System / Paint Code Configuration (manufacturer-specific)." B1650 is a manufacturer-specific body code whose exact meaning depends on the vehicle maker. On several vehicles it is reported as an Occupant Classification System (OCS) malfunction, the system that senses the front passenger's weight/presence to decide whether and how forcefully to deploy that airbag; on some Ford-family vehicles a B1650-range code instead refers to a paint/option configuration value. Because the definition differs by brand, confirm against the specific make. If it is OCS-related, treat it as airbag-related and have it diagnosed promptly.
What are the most common causes of B1650?
The most common causes of B1650 are: Faulty occupant classification (passenger seat weight) sensor or mat, Damaged wiring or connector to the seat occupant sensor, OCS module needs recalibration after a seat or sensor change, Faulty occupant classification control module, Incorrect option/paint configuration data in the module (on makes using that definition), Faulty body control or restraints control module. The specific cause varies by vehicle.
How much does it cost to fix B1650?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1650?
Au7o has documented B1650 across 1 vehicle models from 1 manufacturers: Lexus.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.