Samsung Hood Error Code E-31

E-31 indicates a weight sensor open circuit error. The control board is not receiving a valid signal from the weight sensor, and the out-of-range condition has persisted for at least 5 seconds. This points to a broken connection, a failed sensor, or damaged wiring in the sensor circuit.

A reset may temporarily clear the code, but if the underlying open circuit condition is still present, the error will return within seconds because the fault requires only 5 continuous seconds of an out-of-range sensor reading to trigger. A reset alone is not a fix and should only be used to confirm whether the fault is persistent or intermittent.

If the fix is simply reseating a connector, there may be no parts cost at all, only the time investment. A replacement weight sensor typically costs in the range of $20 to $80 depending on the specific model. A new control board, if that turns out to be the faulty component, generally runs $100 to $250 or more, and professional labor for diagnosis and repair commonly adds $80 to $150 on top of parts.

If the problem is a loose connector, a DIYer comfortable working with appliance wiring can unplug the unit, locate the weight sensor connector, reseat it firmly, and check for obvious wire damage. If the sensor itself has failed or the wiring harness is damaged, the repair involves sourcing a replacement part and basic electrical work, which is manageable for experienced DIYers but may warrant a technician for others.

Operating the hood with an active sensor fault means the control system cannot properly read weight sensor data, which may affect automated functions that depend on that input. While the immediate fire or electrical risk from this specific fault is low, continued use without resolving the issue is not recommended, as the hood may not operate as intended and could mask additional problems.