Westinghouse Dishwasher Error i90
⚡ Quick Answer: The Westinghouse Dishwasher error code i90 indicates a potential malfunction in the drain pump, which may lead to unusual noises during operation. If ... ✅ DIY Fixable
What Does Error i90 Mean?
The Westinghouse Dishwasher error code i90 indicates a potential malfunction in the drain pump, which may lead to unusual noises during operation. If this error persists, it may suggest a communication fault within the appliance's control system. To address this issue, users should first confirm their dishwasher model and consult the user manual for specific error code references. A basic power reset can also be attempted to see if the issue resolves itself.
Possible Causes
- Drain Pump Assembly
- Electrical Connections
- Control Board Malfunction
How to Fix Error i90
DIY Fix Confirm model and consult official documentation
- Locate your exact Westinghouse dishwasher model number on the rating plate.
- Download the user manual from the official Westinghouse support site for your model.
- Search the manual for fault/error code references.
DIY Fix Basic power reset
- Turn off the dishwasher at the mains or circuit breaker.
- Wait at least 5 minutes.
- Restore power and attempt to start a wash cycle.
Technician Only Contact authorised Westinghouse service
- Provide the technician with the exact model number and serial number.
- Describe when the i90 code appears.
- Have the technician check control board communications and internal wiring harness continuity.
Parts needed: Control board (if confirmed communication fault), Wiring harness, User interface board
- If the code persists after reset
- If the dishwasher fails to start or exhibits additional faults
Next step
Choose the next step for i90
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
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
- Typical part-only price
- $120 - $280
- DIY difficulty
- Medium
- Estimated time
- 20-40 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.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
User Interface Board
Receives button or touch input and controls the appliance display and indicators.
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
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
Common Questions
What does i90 error mean on Westinghouse Dishwasher?
The i90 error indicates a potential drain pump malfunction, possibly causing unusual noises.
Can I fix Westinghouse Dishwasher i90 error myself?
Yes, you can try resetting the dishwasher and consulting the user manual for troubleshooting steps.
How much does it cost to fix i90 error?
Repair costs vary by region and service provider; contact an authorized service for an estimate.
When should I call a technician for i90?
Call a technician if the error persists after a reset or if there are additional faults.
Sources & References
Data last verified: 2026-07-31
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