Westinghouse Dishwasher Error i20
⚡ Quick Answer: The Westinghouse Dishwasher error code i20 indicates a drainage issue, typically caused by a blockage or restriction in the drain system. During opera... ✅ DIY Fixable
What Does Error i20 Mean?
The Westinghouse Dishwasher error code i20 indicates a drainage issue, typically caused by a blockage or restriction in the drain system. During operation, you may notice that the dishwasher fails to drain properly, resulting in water remaining in the tub after a cycle. This can also lead to prolonged wash times and unusual noises from the drain pump, signaling the need for attention.
Common Symptoms:
- Dishwasher displays i20 during/after cycle
- Water not draining from tub
- Long wash times or pump runs continuously
Possible Causes
- Clogged or restricted drainage system (medium)
- Incorrect drain hose installation or height (medium)
How to Fix Error i20
DIY Fix Check and clear basic drain blockages
- Turn off and unplug the dishwasher.
- Remove and clean the dishwasher filter and sump area.
- Check the drain hose for kinks, blockage, or sharp bends.
- Clear any debris from the air gap (if present) and from the sink disposal where the dishwasher drain connects.
Technician Only Inspect and service drain pump and hose routing
- Disconnect dishwasher from power and water supply.
- Remove lower access panel and inspect drain pump for obstructions or damage.
- Verify drain hose routing and height conforms to manufacturer specs (no excessive low loops or crimps).
- Test drain pump operation with multimeter and replace if faulty.
Parts needed: Drain pump assembly, Drain hose
- If water remains in dishwasher after clearing visible blockages
- If drain pump makes unusual noises or does not run when it should
- If error reappears after basic cleaning tasks
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 Pump
Pumps waste water out of the appliance during the drain cycle.
- Typical part-only price
- $35 - $80
- 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 components that may be involved
Check these only if your diagnosis points to them.
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
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Technical Specifications
| wattage | 60W |
|---|---|
| component | Drain Pump Assembly |
| resistance | 10-20 ohms |
| part_number | WDW-PUMP-001 |
| voltage_rating | 120V AC |
Common Questions
What does i20 error mean on Westinghouse Dishwasher?
The i20 error means there is a drainage problem, usually due to a blockage in the drain system.
Can I fix Westinghouse Dishwasher i20 error myself?
Yes, you can check for drain blockages, clean the filter, and inspect the drain hose for kinks.
How much does it cost to fix i20 error?
The estimated repair cost for the i20 error ranges from $80 to $250, including 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 makes unusual noises.
Sources & References
Data last verified: 2026-07-22
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