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DTC B1793 Occupant Classification Sensor Power Supply Circuit Malfunction: Description

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

The occupant classification sensor power supply circuit consists of the occupant classification ECU and the occupant classification sensors.

DTC B1793 is recorded when a malfunction is detected in the occupant classification sensor power supply circuit.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. DTC Detecting Condition Trouble Area
B1793
  • The occupant classification ECU receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the occupant classification sensor power supply circuit for 2 seconds.
  • Occupant classification ECU malfunction
  • Front seat assembly RH (Occupant classification sensors)
  • Occupant classification ECU
  • Front seat wire RH