Changed out the switch and that code went away but continued to miss and stay in limp home mode. This time around the only codes left were:
059 Ign output stage 2 T1/2 cyl 4 misfire
079 Knock sensor
Cleared codes, replaced plugs/connectors and everything is back to normal
. It looks like someone has probably removed the bulb for the check engine light. It never comes on. The plugs were the correct type but looked like they tried to get 100k out of them
.