Walter L Meeker , OK February 15, 2015 Appliance: Model GE DROP-IN RANGE JDP39WT1WW F2 & f3 error codes 3 wks ago, I replaced the oven temp sensor. When I removed the old sensor, the insulation on the leads was frayed, so I thought I had picked the right part to replace. 2 days later the error codes popped up again. A new clue this time. The error code came up immediately when turning the oven on, before any heating had taken place. When we tried to clear the error code, it stayed on. After studying the schematic & tech info sheet, I decided it had to be the run-away over-temp limit switch. A snag came up when installing it. Because the switch is shown on the Parts Diagram 2 for the cook top, I thought it would be located there, so I took the cook top apart. After checking the tech info sheet again, I found out it was located on the back of the oven. The range is a drop-in type, so that meant sliding it out of the cabinet, which is a little bit of a pain in the tookus. A little extra work there due to conflicting signals about its location. Bottom line, the limit switch replacement did the trick. The oven has been used several times now, and no more error codes. I'm not sorry I replaced the temp sensor either because the insulation was badly frayed. The factory original did not have an extra protective sleeve over the leads like the replacement part - go figure. Read More... Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours Tools: Nut Drivers, Pliers, Screwdrivers