Tech notesThere is factory service bulletin for the following Toyota models:
2004 Toyota Camry
2004 Toyota Highlander
2004 Toyota Solara
2004 Toyota Camry, Highlander & Solara B1650 OBDDII Code
B1650 Occupant Classification System Fault Prius Clear Code
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When is the code detected?The B1650 code is recorder when a malfunction is detected in the occupant classification system.
B1650 Toyota DescriptionThe occupant classification system circuit consists of the airbag sensor assembly center and the occupant classification system.
If the airbags sensor assy center receives signals from the occupant classification ECU, it determines whether or not the front passenger airbag assy and the front seat airbag assy sight should be operated.