Oven wouldn't operated. Error code F9

I called a repair place. They charged $54 to diagnose, (said it needed a new latch motor) then wanted $220 to complete the repair. I checked online prices and did it myself for about 15 minutes work and the latch motor itself ($44?).

Was necessary to uplug the range, pull it away from the wall and remove the back panel sheet metal, then 3 screws that mount the motor. Replace motor, reattach sheet metal. Plug in. Done. Ready to bake cookies.