A dishwasher appliance includes a wash tub and a sump for collecting wash fluid, a pump assembly for selectively urging a flow of the wash fluid from the sump, a pressure sensor for monitoring a wash fluid level within the wash tub, a microphone for monitoring sound generated during operation of the dishwasher appliance, and a controller configured to obtain a pressure reading using the pressure sensor, determine that the wash fluid in the sump is at a low level based at least in part on the pressure reading, energize the pump assembly to circulate the wash fluid, obtain a sound signal generated during energization of the pump assembly using the microphone, determine that the wash fluid in the sump is not at a low level based at least in part on the sound signal, and provide a user notification that the pressure sensor is defective.

A dishwasher according to an embodiment of the disclosure relates to providing a control method for determining whether a filter is clogged. A dishwasher according to an embodiment of the disclosure may comprise a tub, a sump assembly disposed under the tub and storing washing water, a circulation pump pumping and circulating the washing water stored in the sump assembly, at least one jet device jetting the washing water pumped by the circulation pump into the tub, a filter disposed under the tub and filtering a foreign object flowing inside the tub, a current sensor detecting a driving current input to the circulation pump, a vibration sensor detecting a vibration signal of the tub generated by driving of the circulation pump, and a controller configured to detect whether the filter is clogged based on information obtained from the current sensor and the vibration sensor.