Samsung Microwave Error Code error4

Error4 means the microwave door was opened while the appliance was in the middle of its sensing operation. Sensing cooking requires the door to stay fully closed so the humidity sensor can accurately read steam levels from the food. The microwave stops the cycle and displays this code to prevent inaccurate cooking results. Pressing Pause/Cancel and restarting the sensing cycle with the door kept closed will typically resolve it.

Error4 is not a safety hazard. It is an operational interrupt that simply means the sensing cycle was disrupted by the door opening. The microwave stopped the cycle as intended to prevent improper cooking. No electrical or radiation risk is associated with this code.

If the issue is simply a door opened mid-cycle, there is no repair cost at all. If a faulty door interlock switch is the cause, replacement switches typically cost between $10 and $40 for parts, with professional labor adding $50 to $150 depending on your location. A damaged door latch assembly can range from $15 to $60 for parts before labor costs.

Press the Pause/Cancel pad to clear the error, make sure the door is fully and firmly closed, and then restart your sensing cook cycle from the beginning. Keep the door closed for the entire sensing phase without opening it. If the error continues to appear even when you have not opened the door, inspect the door latch and interlock switch for wear or damage.

Yes, pressing the Pause/Cancel pad is the recommended reset step and will clear the error4 code in most cases. You can also unplug the microwave for a minute and plug it back in to perform a full reset. After clearing the error, restart the sensing cook cycle and keep the door closed throughout the operation.