2000 Ford Truck check engine light and air bag light will n

no codes no check engine light on
if engine running and check engine light is on ,you have code
air bag codes, need a scanner to get the codes OBDII reader will not get the codes for the air bags

when I start the truck all the lights are suppose to come on. They all come on except the check engine light and the passanger air bag light will not light up

did u had the truck serviced for any of these lights before coming on ?
again with key on engine off the lights should come on
check if not bulb out or was removed
very rare circuit or a wire