Samsung Hood Error Code E-46

E-46 indicates a primary open circuit error on the Easy/PH sensor, which has been detected continuously for at least 3 minutes. The PH sensor is part of the automatic ventilation system that monitors air conditions and adjusts fan speed. The error means the control board is receiving no signal from that sensor, pointing to a broken circuit somewhere between the sensor and the board.

The hood's automatic ventilation mode will likely not function correctly while E-46 is active, since it depends on input from the faulty sensor. You may still be able to operate the fan manually at a fixed speed. It is not a fire or immediate safety hazard, but cooking without a properly functioning hood means fumes, smoke, and grease vapor may not be adequately evacuated, so resolving the error promptly is recommended.

Repair costs vary depending on the root cause. If only a connector needs reseating or cleaning, there may be no parts cost at all, with only a service call fee if a technician is involved. Replacing the PH sensor module typically costs in the range of $30 to $100 for the part, while a main control board replacement can run $80 to $250 or more for the part, plus labor if professionally installed.

Some causes of E-46 are DIY-approachable, such as reseating a loose sensor connector or cleaning corroded pins on the wiring harness. However, replacing the PH sensor module or the main control board requires disassembly of the hood and comfort working with electrical components. If you are not confident testing continuity with a multimeter or handling appliance wiring, a qualified technician should perform the repair.

A power reset, such as unplugging the hood or switching off its circuit breaker for a few minutes, may temporarily clear the error code. However, if the underlying open circuit condition still exists, the fault will return within 3 minutes of the sensor circuit being monitored again. A reset alone is not a fix and the root cause must be identified and corrected.