DTC B0091-13: Left Side Restraints Sensor 1 - Circuit open: Action

NOTE: The front right door impact sensor, the left B pillar impact sensor and the right C pillar impact sensor are bussed together and will set corresponding Diagnostic Trouble Code(s) simultaneously

Check the left B pillar impact sensor electrical connector is correctly connected and free from damage, repair as necessary
Refer to the electrical circuit diagrams and check the left B pillar impact sensor power circuit for open circuit, high resistance. Repair the circuit as necessary, clear the DTC and retest
If the fault persists, install a new left B pillar impact sensor as necessary