after I changed the oil and filter, rerouted the crankcase breather, tube and put a factory air filter in, the backup alarm stays on when the truck is in reverse. i have checked every thing i touched, with the KOEO and in reverse to see if i can make the alarm stop, nothing make a difference. i checked each sensor, and they all are working, each one will make the sound change when i place my hand in front of them.
i have searched online for any answers and i have found nothing yet. nothing n the owners manual, didn't expect to find any thing there. HELP????
2008 F350 6.4l lariat crew cab.
thanks