Frigidaire dishwasher / drain system
Frigidaire Dishwasher i20 Error: Drain Checks and Repair Cost
The Frigidaire dishwasher i20 error usually means the dishwasher did not drain completely or detected a drain restriction.
Quick answer
What it means
The Frigidaire dishwasher i20 error points to incomplete draining or a restriction. Filter, sump, drain hose, air gap, and disposer connection checks come first.
Typical repair$120-$310
UrgencyMedium
Repair or replaceFix first if the issue is a filter, hose, air gap, or disposer connection.
Likely causes
- Clogged filter or sump
- Blocked or pinched drain hose
- Air gap blockage
- Garbage disposal knockout not removed
Safe first checks
- Clean filters and inspect the sump for food soil or debris.
- Check that the drain hose is not pinched or restricted.
- Inspect the air gap or disposer connection.
- If recently installed, confirm the disposer knockout plug was removed.
Likely parts and repair cost
Typical repair range: $120-$310. Parts or systems commonly considered:
- Drain pump
- Drain hose
- Check valve
- Pressure sensor path
Stop and call a pro when
- Water leaks under the cabinet.
- Glass or sharp debris cannot be removed safely.
- The error returns after filter and hose checks.
Source trail
This guide starts with manufacturer support, public recall lookup, or safety references, then turns those sources into plain-language checks.
Questions people ask
Is Frigidaire i20 always a bad pump?
No. The filter, hose, air gap, and disposer connection should be checked first.
Can installation cause i20?
Yes. A missed disposal knockout or incorrect drain hose setup can cause drain errors.