Frigidaire Dishwasher Error Code i46

The i46 code means the dishwasher's calibration process detected that the water level pressure sensor was reading too high while the tub was empty. This tells the control board that the sensor's baseline signal is invalid, so it cannot reliably monitor water levels during a wash cycle. The error is most commonly caused by a wiring issue, a blocked pressure port, or a faulty pressure sensor.

Running the dishwasher with an active i46 code is not recommended. Because the water level sensing system cannot establish a valid calibration baseline, the control board may not be able to accurately detect overfill conditions during a wash cycle. This could potentially lead to water overflow or incomplete cycles. It is best to resolve the error before resuming normal use.

A power reset may temporarily clear the i46 code, but the error will almost certainly return if the underlying cause has not been fixed. The code is triggered during the calibration cycle, so the dishwasher will detect the same invalid pressure signal the next time it runs that routine. A permanent fix requires identifying and correcting the fault in the sensor, wiring harness, or pressure port.

Some causes of i46 are DIY-friendly. You can inspect the wire harness for loose or corroded connectors and check the pressure sensor port for blockages or trapped water without specialized tools. If those checks do not resolve the issue and the sensor itself needs to be replaced, a confident DIYer with basic appliance repair experience can typically handle the repair, though a technician may be needed for PCB diagnosis.

Repair costs vary depending on the root cause. If the issue is simply a loose connector or a blocked pressure port, there may be no parts cost at all. A replacement pressure sensor typically costs between $20 and $60 in parts. If the main control board is at fault, parts alone can range from $80 to $200 or more, with additional labor costs if a technician is hired.