Frigidaire dishwasher — Error Code i20
The unit cannot evacuate wash water within the allotted timeframe.
What it means
The i20 error code on a Frigidaire dishwasher signals a drain fault. The machine's main control board tracks the pressure sensor (or pressure switch) during the water removal phase. If the sensor detects that the sump remains filled after the drain pump has run for a specific duration—typically 90 to 120 seconds—the board terminates the cycle and displays i20. This safety feature prevents kitchen flooding. The problem usually stems from a physical obstruction in the drain line (filters, hose, air gap, or home plumbing), a mechanical failure of the drain pump impeller, or an electrical issue involving the pump motor, pressure sensor, or the wiring harness leading to the main control board.
Likely Causes
- 1 Clogged Filters or SumpAccumulated food particles, broken glass, or debris blocking the fine filter or sump assembly, which stops water from entering the drain pump.
- 2 Obstructed Drain Hose or Air GapA bent drain hose, a plugged sink air gap, or a failure to remove the garbage disposal knockout plug during a recent installation.
- 3 Faulty Drain PumpThe drain pump motor may have sustained an electrical failure like open windings, or a mechanical issue such as a jammed or fractured impeller.
- 4 Defective Pressure SensorThe pressure sensor could be fouled with grease or have suffered an electrical fault, causing it to report a 'tub full' status to the control board even when the unit is empty.
- 5 Control Board FailureIn rare instances, the main control board fails to supply power to the drain pump or incorrectly processes signals from the pressure sensor.
How to clear / reset
To reset the i20 error code, press and hold the Cancel/Start button for 3 seconds to stop the current cycle, then shut off power to the dishwasher at the circuit breaker for 5 minutes. Re-energize the unit to reset the control board. Be aware that if water remains in the tub or the underlying issue—such as a blocked pump—is not addressed, the i20 code will reappear during the next cycle. You must manually bail out any remaining water and clear all obstructions to fix the issue permanently.
Common replacement parts
When to call a pro
Contact a technician if you have cleared the filters and checked the sink plumbing, but the dishwasher still fails to drain. Troubleshooting a bad pressure sensor, testing pump voltage, or swapping the main control board requires a multimeter and professional skill. A-Fix Service provides a $90 diagnostic fee (waived if you proceed with the repair) and covers all work with a 1-year parts and labor warranty. We stock common Frigidaire drain pumps and sensors to ensure your appliance is fixed in one visit.
FAQs
What is the typical cost for a Frigidaire i20 error repair?
If the problem is a simple clog, you can resolve it at no cost. If you require a new drain pump or pressure sensor, professional repair costs generally run between $150 and $250, including parts and labor.
Can I perform the i20 repair myself?
Yes, if the fault is caused by a clogged filter, a kinked drain hose, or a blocked air gap. These physical blockages are manageable for most homeowners. Electrical diagnostics demand more technical experience.
Does the i20 code clear automatically once the water is gone?
No, you usually need to perform a hard reset at the circuit breaker or press the Cancel button after manually clearing the water and removing the obstruction.
How long does a professional take to replace a Frigidaire drain pump?
A qualified technician can typically diagnose the fault, access the dishwasher base, and swap out the drain pump within 45 to 60 minutes.
Is it safe to continue using the dishwasher while the i20 code is active?
No. The control board disables wash cycles to prevent the tub from overflowing. Running the machine without resolving the drainage fault risks water damage to your home.
Need help with i20?
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