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B1780 Code – Front Occupant Classification Sensor Left Circuit Malfunction

What are the Possible Causes of the Code B1780?
  • Faulty Separate Type Front Seat Cushion Spring Assembly Left (Front Occupant Classification Sensor Left)
  • Separate Type Front Seat Cushion Spring Assembly Left harness is open or shorted
  • Separate Type Front Seat Cushion Spring Assembly Left circuit poor electrical connection
  • Faulty Occupant Detection ECU
  • Faulty Center Airbag Sensor Assembly
  • Need help with this OBD II code? Our mechanics are available within west Michigan to help. Outside of our service area? Visit our Car Help Section where you can ask questions and get answers.

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