B1782 Left rear occupant classification sensor circuit reads a fault
What does B1782 mean on a Toyota?
B1782. Left rear occupant classification sensor circuit reads a fault. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.
Common causes of B1782
- Failed left rear occupant classification sensor
- Sensor harness open or shorted
- Poor electrical connection
- Failed occupant classification ECU
- Low system voltage
How to fix B1782
- Disconnect the battery and wait before touching SRS circuits
- Confirm the code and check the rear seat sensor
- Inspect and reseat the occupant sensor connectors
- Test the sensor circuit for opens and shorts
- Replace the sensor only after tests fail