hyundai i20 fault code B121500/121600 parking sensor

[@husseen147]

hi boss how i know witch one not working when i chack by computer show me 4 sensor fullty need to change all or what

[@hindisongsamritbedi4212]

what is your experties only machine is telling you in my case no voltage is comming .

[@hindisongsamritbedi4212]

there are three wires in rear main jack

[@hindisongsamritbedi4212]

but back light is working

[@hindisongsamritbedi4212]

from where the voltage is comming and how much