Simpson Dishwasher Error i90
⚡ Quick Answer: The i90 error code on your Simpson Dishwasher indicates a potential malfunction in the drain pump, which may cause unusual noises during operation and... ✅ DIY Fixable
What Does Error i90 Mean?
The i90 error code on your Simpson Dishwasher indicates a potential malfunction in the drain pump, which may cause unusual noises during operation and prevent the dishwasher from draining water properly. To troubleshoot this issue, you can try performing a general reset by turning off the dishwasher, disconnecting it from power, waiting a few minutes, and then reconnecting it to see if the error clears. If the problem persists, further investigation may be required.
Possible Causes
- Drain Pump
- Clogged Drain Filter
- Faulty Control Board
How to Fix Error i90
DIY Fix General Reset Attempt
- Turn off the dishwasher and disconnect from power (e.g., unplug or turn off the circuit breaker).
- Wait at least a few minutes.
- Reconnect power and run any program to see if the code clears.
Technician Only Model‑Specific Source Investigation
- Locate and download the exact user/service manual for the specific Simpson dishwasher model showing i90.
- Check error code definitions in that manual (if available).
- If no definition exists in the manual, contact Simpson technical support for clarification.
- If the i90 code persists after power reset and normal function is impaired, contact Simpson authorised service.
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
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 parts options
Check related components first; use model search as a fallback.
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.
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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 Simpson Dishwasher?
The i90 error indicates a malfunction in the drain pump, affecting water drainage.
Can I fix Simpson Dishwasher i90 error myself?
Yes, you can attempt a general reset of the dishwasher to clear the error.
How much does it cost to fix i90 error?
Repair costs vary by model and region, so it's best to consult a technician for an estimate.
When should I call a technician for i90?
If the i90 code persists after a power reset and normal function is impaired, contact an authorized service.
Sources & References
Data last verified: 2026-07-31
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