PLEASE HELP I VE HAD A PROBLEM WITH O2 SENSOR WHICH WAS SMELLING GAS on 2003 Toyota Highlander

ENGINE LIGHT WAS ON AND IT WAS SMELLING REALLY BAD GAS I VE CHANGED MY O2 SENSOR YESTERDAY AFTER I CHANGED IT IT STARTED AND ENGINE LIGHT GONE .THIS MORNING I WAS GONNA GO MY JOB THE CAR DIDNT START AND IT SMELL LITTLE GAS AGAIN WHAT MIGHT BE THE PROBLEM after i ve changed sensor it worked now it doesnt start ??

1 answer 1 comment
what is the eng codes?
after i ve changed the o2 sensor engine code is gone now it doesnt start as there is no gas in it ???