B1901 — Air Bag Crash Sensor #1 Feed/Return Circuit Short To Ground

What it means

B1901 is an OBD-II diagnostic trouble code: Air Bag Crash Sensor #1 Feed/Return Circuit Short To Ground.

Typical fix

Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.