GE Range Error Code 743

Error code 743 means the oven door lock for Cavity 1 failed to reach its expected position during a lock or unlock cycle. The control board commands the door lock assembly to engage or disengage and monitors feedback from a position switch to confirm the move completed. When that confirmation does not arrive, the fault is logged. This most often occurs in connection with the self-clean function.

Standard baking and broiling functions may still be available depending on the current lock state, but you should not attempt to run another self-clean cycle until the fault is resolved. An unresolved door lock issue means the oven cannot guarantee the door is properly secured during high-temperature cleaning. Addressing the fault before running self-clean again is strongly recommended.

Start by pressing Cancel to reset the system and observe whether the code returns. Next, inspect the door latch area for obstructions, grease buildup, or visible damage to the latch arm. Check the wiring harness between the lock assembly and the control board for loose connectors or damaged wires. If the harness and latch area appear normal, the lock assembly itself or the control board should be tested further, potentially with a multimeter to check the motor windings and position switch contacts.

Pressing Cancel is always the correct first step because it resets the system and allows the lock mechanism to attempt another cycle. If the fault was caused by a temporary glitch or power fluctuation, the reset may clear it permanently. However, if a mechanical or electrical problem exists with the lock assembly or harness, the code will return and further diagnosis will be required.

If the repair only requires cleaning debris from the latch area or reseating a loose connector, the cost is minimal. Replacing a door lock assembly typically falls in the range of $60 to $150 for the part, plus labor if a technician is hired. A main control board replacement, if that is the root cause, generally runs $150 to $350 or more for the part alone.