Frigidaire Dishwasher Error Code i43

The i43 code means the pressure sensor is sending a signal that is too high and has been out of the acceptable range for more than one second. The pressure sensor monitors the water level inside the dishwasher tub. This fault causes the dishwasher to halt operation and requires diagnosis of the sensor, its wiring harness, and the connection to the main control board.

A reset may temporarily clear the code, but if the underlying fault is still present, the i43 error will return once the dishwasher runs and the control board detects the out-of-range signal again. A reset is useful for confirming whether the fault is intermittent, but it does not fix the root cause. Proper diagnosis of the sensor and wiring is needed for a lasting repair.

If the issue is a loose or corroded connector, the repair may cost nothing beyond your time. A replacement pressure sensor typically costs in the range of $20 to $60 for the part, depending on the model. If the main PCB is at fault, board replacement costs are generally in the $100 to $200 range or higher for parts alone. Professional labor will add to these estimates depending on your location and service provider.

In many cases, yes. Start by unplugging the dishwasher and inspecting the wire harness and connector between the pressure sensor and the PCB for loose connections, corrosion, or damage. Reconnecting or cleaning a faulty connector may clear the error without any part replacement. If the wiring is intact, replacing the pressure sensor is a repair many experienced DIYers can perform.

It is not recommended to continue using the dishwasher while this code is active. The pressure sensor is responsible for controlling water fill levels, and a malfunctioning sensor could result in the dishwasher overfilling or not filling correctly. Running the unit with this fault present carries a risk of water damage. Diagnose and resolve the issue before resuming normal use.