I have an 02 4.0 ranger and recently my engine light came on. It was a PO 402 and I replaced the EGR pressure sensor ( problem solved ) now my airbag light comes on and stays on. When I shut the truck off and restart it it stays off. This happens off and on. I've checked the fuses and they are all good. I've also noticed that my passanger side airbag will not turn off now when you incert the key and turn the switch. Any advice?