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

  1. Turn off and unplug the dishwasher.
  2. Remove and clean the dishwasher filter and sump area.
  3. Check the drain hose for kinks, blockage, or sharp bends.
  4. 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

  1. Disconnect dishwasher from power and water supply.
  2. Remove lower access panel and inspect drain pump for obstructions or damage.
  3. Verify drain hose routing and height conforms to manufacturer specs (no excessive low loops or crimps).
  4. Test drain pump operation with multimeter and replace if faulty.

Parts needed: Drain pump assembly, Drain hose

🛑 When to Call a Pro:
  • 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

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: 2026-03-09

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