Upper oven turn on and off then puts f9
F9 indicates a problem with the door latch circuit. Holding the door in the open position, push in the door switch until the cavity light goes off. Put the upper oven in the clean cycle and watch to see if the door latch cycles.
If the door latch mechanism is working correctly, the latch should stop in the closed position (the door will not shut all the way now). If the door latch does not even move and the F9 error appears, which is highly likely, you definitely have a problem with the latch circuit. (If the door latch did cycle to the closed position, cancel the self-clean mode to cycle the latch back to the open position.)
First, check that there are no loose wires on the door latch switches. Also check that none of the wires are pinched between the latch mechanism and the Oven Control Unit. Repair any wires that may be damaged and reconnect any connections that maybe loose. If you have just made any repairs, try putting the oven into bake mode with the door closed and test.
If there was no wiring that needed repaired and all connections looked good, test each of the door switches to be operating properly. Disconnect the wires from one switch at a time and perform a continuity test on the switch. In the open position your meter should read "OL", in the closed position it should emit a tone, or read "0.0". If either switch fails this test, replace the switch and test your oven again.
If none of the above conditions exist, the Oven Control is not reading input from the door latch sensor and needs to be replaced.
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