DTC DETECTING CONDITION:
Curtain airbag sensor (RH) is faulty.
If DTC 58 is displayed, the circuit within the curtain airbag sensor (RH) is faulty.
Replace the curtain airbag sensor (RH). 
AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble Code
DTC 58 CURTAIN AIRBAG SENSOR RH FAILURE
DTC DETECTING CONDITION:
Curtain airbag sensor (RH) is faulty.
If DTC 58 is displayed, the circuit within the curtain airbag sensor (RH) is faulty.
Replace the curtain airbag sensor (RH).