Samsung Microwave Error Code E-33

E-33 is a weight sensor error code on Samsung microwaves. It triggers when the initial HEX value from the weight sensor reads below 14 for 30 consecutive seconds while the sensor is active. This indicates the sensor is not producing a valid signal, which prevents accurate automatic cooking operation. The issue typically points to a failed sensor or a wiring problem.

Unplugging the microwave and restoring power may temporarily clear the display, but the E-33 code will return if the underlying fault with the weight sensor or its wiring is not corrected. A reset does not fix the sensor or repair damaged wiring. Proper diagnosis and repair of the faulty component are required to resolve the error permanently.

Repair costs depend on the root cause. If only a wiring connector needs to be reseated, there may be no parts cost at all. A replacement weight sensor typically falls in the range of $20 to $60 for the part alone. If professional labor is involved, total repair costs can range from $80 to $200 or more depending on your location and the service provider. A failed control board would push costs to the higher end and may make repair less cost-effective on older units.

Some causes of E-33 are DIY-friendly, such as reseating a loose wiring connector or inspecting the harness for obvious damage. If the sensor itself has failed, replacing it requires disassembling part of the microwave interior. Because microwaves contain high-voltage capacitors that can retain a lethal charge even when unplugged, any internal inspection should only be performed by someone comfortable with proper discharge procedures and electrical safety.

The E-33 fault specifically affects the weight sensor, which is used for automatic cooking modes. Basic manual microwave operation may still function, but automatic sensor-based cooking programs will not work correctly. Using the microwave while this fault is present risks inaccurate cooking results, and the underlying wiring issue could potentially worsen over time. It is best to address the fault before regular use.