GE Oven Error Code F16

F16 on a GE oven indicates a fault in the lower door latch circuit as monitored by the lower machine control board. The board checks the resistance across pins 3 and 4 of connector J4 and expects to see an open circuit during normal operation. When it detects continuity or a short in that circuit outside of a self-clean cycle, it sets the F16 code. The fault is typically in the latch switch, the wiring harness, or the latch motor assembly.

Normal baking and cooking functions may still operate when F16 is present, but you should not attempt to run a self-clean cycle until the fault is resolved. A malfunctioning door latch circuit means the door may not lock properly during self-clean, which reaches temperatures above 800 degrees Fahrenheit. Until the latch circuit is repaired, treat the self-clean function as unavailable.

Repair costs vary depending on the failed component. A replacement door latch assembly typically runs in the range of $40 to $100 for the part, while a lower machine control board can cost between $150 and $350 or more depending on the model. Adding professional labor, total repair costs can range from $150 to $500 or higher. Getting a diagnostic inspection first helps narrow down the exact failed component before committing to parts.

A knowledgeable DIYer can perform the initial resistance check at J4 pins 3 and 4 on the lower machine control board to determine whether the fault lies in the latch assembly or the wiring. Replacing a door latch assembly is generally within reach for someone comfortable working with appliance wiring. However, if the lower machine control board itself needs replacement, the repair involves handling sensitive electronics and reconnecting multiple harness connectors correctly, which may be better suited for a qualified technician.

Power cycling the oven by shutting off the circuit breaker for a few minutes may temporarily clear the F16 display, but the code will return if the underlying latch circuit fault is still present. A reset does not repair a shorted switch, damaged wiring, or failed component. The resistance check at J4 pins 3 and 4 is necessary to confirm whether the fault has been resolved.