B1650 on Lexus
Occupant Classification System / Paint Code Configuration (manufacturer-specific)
B1650 on Lexus vehicles indicates occupant classification system / paint code configuration (manufacturer-specific). Au7o has documented this code across 1 Lexus model — most commonly on LX. 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.
Common Causes of B1650
- •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
B1650 on Lexus by Model
Lexus LX(1 issue)
- Front Occupant Classification / Airbag Sensor Fault Triggering SRS Warning and Airbag Recall Repairs2022-2024
Multiple 2022-2024 Lexus LX owners reported persistent SRS/airbag warning messages and dealer diagnoses related to the front passenger occupant classification system and related airbag components. This generation shares Toyota/Lexus safety-system campaigns affecting front seat occupant sensing and airbag readiness, and owners describe warning lights, repeated dealer visits, and concerns about whether the passenger airbag will deploy correctly. Because the issue directly affects restraint-system operation, it is considered high severity even when the repair itself is covered by recall or warranty.
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View B1650 across all makes →Frequently Asked Questions
What does B1650 mean on Lexus?▼
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. On Lexus specifically, this code is documented across 1 model.
What causes B1650 on Lexus vehicles?▼
Common causes on Lexus: 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). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1650 on a Lexus?▼
Repair costs vary widely depending on the root cause and specific Lexus model.
Which Lexus models have B1650 documented?▼
Au7o has documented B1650 on 1 Lexus model: LX.