Blanco Dishwasher Error i20
⚡ Quick Answer: The Blanco dishwasher error code i20 signifies a drainage failure, where water remains in the tub after a wash cycle. This issue is often accompanied ... ✅ DIY Fixable
What Does Error i20 Mean?
The Blanco dishwasher error code i20 signifies a drainage failure, where water remains in the tub after a wash cycle. This issue is often accompanied by unusual sounds during operation, indicating a malfunction in the drain pump or an obstruction in the drainage path. Common causes include a blocked filter, kinked drain hose, or a failure to remove the knockout plug at the disposal connection. Regular maintenance and clearing of the drain path can help resolve this issue.
Common Symptoms:
- cycle stops mid‑program with i20 displayed
- standing water in dishwasher tub after wash
- incomplete wash/rinse because water not removed
Possible Causes
- Drainage obstruction (filter, sump, hose, air gap) (medium)
- Kinked or improperly routed drain hose (medium)
- Knockout plug not removed at disposal connection (medium)
How to Fix Error i20
DIY Fix Inspect & clear drain path
- Turn off power to dishwasher
- Remove and clean filter and filter assembly
- Check sump area for debris and remove blockages
- Inspect visible drain hose for kinks or obvious clogs
Technician Only Check drain pump, hose routing, and air gap
- Disconnect dishwasher power and water
- Remove access panels and trace full drain hose routing
- Verify drain pump impeller spins freely and is not blocked
- Check that hose is at proper height and air gap (if present) is clear
Parts needed: drain hose, drain pump assembly, air gap component
- If water continues to remain and you cannot locate a blockage
- If the drain pump is suspected failed after inspection
- If there is unusual noise or mechanical failure during drain attempt
Next step
Choose the next step for i20
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
- Typical part-only price
- $15 - $30
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Drain Pump
Pumps waste water out of the appliance during the drain cycle.
Model-compatible Dishwasher parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dishwasher Cleaner and Descaler
Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | 30W |
|---|---|
| component | Drain Pump |
| resistance | 5-15 ohms |
| part_number | BLANCO-PUMP-1234 |
| voltage_rating | 230V AC |
Common Questions
What does i20 error mean on blanco dishwasher?
The i20 error indicates a drainage failure, where water remains in the tub after a wash cycle.
Can I fix blanco dishwasher i20 error myself?
Yes, you can inspect and clear the drain path by cleaning the filter and checking for blockages.
How much does it cost to fix i20 error?
The estimated repair cost for the i20 error ranges from $60 to $180 for parts and labor.
When should I call a technician for i20?
Call a technician if water remains in the dishwasher after clearing blockages or if the drain pump is suspected to be faulty.
Sources & References
- How to Fix i20 Error on Dishwasher (community)
- Dishwasher Error Code i20 - Unit did not drain properly (official)
Data last verified: 2026-07-25
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