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

  1. Locate your exact Westinghouse dishwasher model number on the rating plate.
  2. Download the user manual from the official Westinghouse support site for your model.
  3. Search the manual for fault/error code references.

DIY Fix Basic power reset

  1. Turn off the dishwasher at the mains or circuit breaker.
  2. Wait at least 5 minutes.
  3. Restore power and attempt to start a wash cycle.

Technician Only Contact authorised Westinghouse service

  1. Provide the technician with the exact model number and serial number.
  2. Describe when the i90 code appears.
  3. 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

🛑 When to Call a Pro:
  • If the code persists after reset
  • If the dishwasher fails to start or exhibits additional faults

Technical Specifications

wattage 60W
component Drain Pump Assembly
resistance 10-30 ohms
part_number WH23X10030
voltage_rating 120V AC

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: 2026-03-09

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