KitchenAid Dishwasher: pump motor running continuously
What is this symptom?
Is your KitchenAid dishwasher's pump motor running continuously, even after cycles end? This issue often points to problems like a stuck float switch, a blocked drain hose, or a malfunctioning control board. Understanding these causes can help you troubleshoot effectively.
Important Tips for KitchenAid Models
- Some KitchenAid models may have specific control logic or turbidity sensors affecting drain/pump behavior; refer to model-specific manual for error codes and diagnostics.
Possible Causes
Stuck or faulty float switch / water level sensor
How to Identify: Pump runs continuously or drain cycle repeatedly, float does not move freely or is blocked by debris, or the controller always detects high water levels.
Part: Float switch / water level sensor
Drain hose blockage or improper routing causing false drain signals
How to Identify: Pump runs trying to drain despite no water, visible kinks or clogs in hose, water backing up, or siphon effect due to hose position.
Part: Drain hose/check valve
Control board or relay stuck powering pump
How to Identify: Motor runs continuously regardless of float or hose condition; no change after cleaning sensors; intermittent behavior not linked to water level.
Part: Electronic control board / relay
Faulty drain pump mechanical/electrical failure
How to Identify: Distinct humming from pump during continuous run, impeller jam, or motor tested with multimeter shows issues; only minor debris found upon inspection.
Part: Drain pump motor assembly
DIY Solutions
Check and free the float switch
- Disconnect power
- Locate float assembly in bottom corner of dishwasher tub
- Ensure float moves freely; gently clean around float cup to remove debris
- Restore power and test operation
Inspect and clear drain hose and check valve
- Disconnect power
- Remove access panel and locate drain hose
- Inspect hose for kinks or clogs; flush or replace if needed
- Check the check valve for debris
- Reassemble and test dishwasher
Reset control board
- Cut power at circuit breaker or unplug dishwasher
- Wait 5–10 minutes
- Restore power and test if pump stops after cycle
Next step
Choose the next step for pump motor running continuously
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
Float Switch
Detects the maximum water level to prevent overflow and potential flooding.
- Typical part-only price
- $15 - $40
- DIY difficulty
- Easy
- Estimated time
- 10-20 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.
Pressure Switch
Detects the water level inside the tub and signals when to start or stop filling.
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
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.
Professional Repairs
Replace float switch / water level sensor
Control board repair or replacement
Drain pump replacement
When to Call a Professional
Preventive Maintenance
-
Periodically clean float area and drain hose: Float sticking and hose clogs that can cause continuous pump operation
Frequency: Every 3-6 months
Frequently Asked Questions
Why is my KitchenAid Dishwasher Pump motor running continuously?
How do I fix KitchenAid Dishwasher Pump motor running continuously myself?
How much does it cost to fix Pump motor running continuously?
When should I call a technician for Pump motor running continuously?
Community Analytical Insights
Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions
Common Issues Reported by Users
- Faulty float switch preventing the pump from shutting off
- Clogged drain or filter causing the pump to run continuously
- Electrical issue such as a stuck relay or short circuit
User Suggested Solutions
-
Inspect and replace the float switch if necessary. To do this, disconnect the dishwasher from power, remove the float cover, and check for obstructions. If the switch is faulty, replace it with a new one.
-
Clean the drain and filter. Remove the bottom spray arm and filter, clean them thoroughly under running water, and ensure there are no blockages in the drain hose.
-
Check for electrical issues. Inspect the wiring and connections to the pump motor and control board. If you find a stuck relay, it may need to be replaced. Use a multimeter to check for continuity.
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