If your dishwasher won’t turn off, a stuck leak sensor, float switch, or control glitch often keeps the drain or wash motor running—use the steps below to stop it safely.
A dishwasher that runs forever wastes power, burns pumps, and drives you up the wall. The good news: most causes are simple once you know where to look. This guide walks you through fast checks first, then deeper fixes that still fit in a basic toolkit.
You’ll see two handy tables, clear steps, and brand notes. Read from top to bottom if you want a full reset. If water is on the floor or you smell hot plastic, cut power at the breaker before doing anything else.
Fast Triage: What You’re Seeing Vs. Likely Cause
When you match the symptom to a likely cause, you save time and avoid random part swaps. Use the quick map below to aim your next move.
| Symptom | Likely Cause | What To Try |
|---|---|---|
| Drain pump never stops | Leak sensor triggered / water in base pan | Inspect base, dry any water, fix leak, then reset power |
| Machine stuck mid-cycle | Control glitch or door switch not latching | Cancel the cycle, power cycle for one minute, check latch |
| Wash arms keep spinning for hours | Heater slow due to hard water or sensor error | Clean filters, run hot water at sink, try a cleaner |
| Fills then immediately drains on loop | Float switch stuck high or drain hose issue | Free the float, confirm high loop or air gap, clear hose |
| Panel says “End” yet motors run | Timer or relay on control board stuck | Power cycle; if it returns, board likely needs service |
Dishwasher Not Turning Off: Quick Steps That Work
- Cancel the current cycle. Press Cancel/Drain or hold Start for three seconds, then wait for the two-minute drain to complete.
- Power cycle the control. Turn the breaker off for one full minute. Restore power and try a short cycle.
- Open the door and check the float. The float should move up and down freely and click a little as it actuates. Remove crumbs or a fork jamming it.
- Check for leak triggers. Look in the base pan with a flashlight. Any pooled water keeps the drain pump running on many models.
- Clear the filters. Pull the lower filter set, rinse out food sludge, and re-seat firmly so water sensors read right.
- Confirm the drain path. Make sure the drain hose has a high loop or air gap and the garbage disposer knockout was removed during install.
- Try a detergent clean. Run a cleaner cycle to remove soap film that confuses turbidity or temp sensors.
Safety First: Power And Water
If you need to remove the toe-kick or reach the base pan, cut power at the breaker. Unplug only if the cord is easy to access. Shut the water valve if you see a drip around the inlet line or valve body.
Deeper Fixes: Stop The Runaway Cycle
If The Drain Pump Runs Continuously
Many machines run the drain pump whenever the leak sensor detects moisture in the base. That keeps the tub from refilling so your kitchen stays dry. Dry the base pan with towels or a turkey baster, then find the source of the leak: a loose hose clamp, a weeping inlet valve, or foam from hand soap. See the official Samsung leak sensor guidance for an example of this behavior.
If The Float Switch Is Stuck
The float tells the control that the tub is full. When jammed in the raised position, the control may keep pumping or never advance. Lift the dome or tower and clean underneath. On some models the float micro-switch sits beside the tower; make sure its little lever moves freely.
If The Door Isn’t Latching Cleanly
A half-latched door can confuse the control. The panel may light yet the board never gets a solid closed signal, so cycles stall and restart. Tighten loose screws on the strike, check rack items that hit the door, and make sure the tub gasket isn’t folded over.
If The Control Board Or Timer Sticks
A welded relay or a timer that fails to step can leave pumps or heaters running. If a one-minute power reset clears it once and the same symptom returns the next day, the board or timer likely needs replacement. Photograph all wire positions before swapping parts.
If The Drain Path Causes Constant Draining
A drain hose without a high loop or a choked air gap can siphon water and trick sensors. Route the hose to the underside of the counter, clear the air gap cap, and verify the disposer knockout was punched during install. If the hose is greasy inside, replace it rather than trying to scrub five feet of tubing.
Brand Clues: What The Lights And Codes Mean
A few brand systems give clear hints when a dishwasher won’t shut down. These notes can save a service call.
Bosch With Water In Base (E15)
Bosch lists code E15 when the safety switch senses water below the tub. The unit often drains and locks out until the base is dry and the leak is corrected.
Samsung Leak Sensor Keeps Draining
Samsung models keep draining when the leak sensor sees moisture. Dry the sensor area, sort any leak, and check for related codes on the panel.
GE Cancel/Drain And Delay
On GE machines you can stop a stalled cycle by pressing Cancel/Drain, then waiting for the short drain phase to finish. Delay Start can also keep lights on longer than you expect; cancel it if set by mistake.
Whirlpool/KitchenAid Power Reset
Whirlpool family controls often recover with a one-minute power reset. If the panel is frozen, that simple step is the fastest way to clear a glitch. See Whirlpool’s reset steps for the exact method.
Hands-On Inspection Checklist
Grab a flashlight and a towel. These quick checks find the root cause on most homes in minutes.
| Part/Area | What To Look For | Action |
|---|---|---|
| Leak sensor & base pan | Any pooled water or damp insulation | Dry it out, then run a short cycle and watch for drips |
| Float switch & tower | Moves freely; no debris under the dome | Clean, reseat, confirm click from micro-switch |
| Door latch & strike | Firm close; racks not hitting door | Tighten strike; replace worn latch if loose |
| Filters & sump cover | No sludge, cover fully seated | Rinse filters; reinstall securely |
| Drain hose & air gap | High loop present; air gap clear | Re-route hose; clear cap; remove disposer knockout |
| Inlet valve area | No seep at fittings during fill | Snug clamps; replace valve if dripping |
Prevent It From Happening Again
Use detergent made for dishwashers and skip hand soap. Keep the filters clean every few weeks. Rinse big food scraps from plates so the pump screen doesn’t clog. Once a month, run a hot cycle with a cleaner to cut film on sensors and heaters.
If a new install is acting odd, recheck drain routing and make sure the disposer knockout is removed. A quick change there resolves many “it won’t stop” calls.
When To Call A Pro
If the breaker trips, if you smell burning, or if you find water under the unit after drying the base once, book service. Control boards, heater relays, and wiring faults need test gear and parts that aren’t worth guessing on at home.
Bottom Line For A Dishwasher That Won’t Turn Off
Work from simple to specific. Cancel and power reset, free the float, clear the drain path, dry the base pan, and read any brand code. Those moves stop endless running in most kitchens without a parts order.
Common Missteps To Avoid
- Holding the door open during Cancel/Drain. Close the door after pressing the button so the pump can empty. Opening mid-drain restarts the timer and makes the machine seem stuck.
- Skipping the high loop or air gap. Without that rise, sink water can backflow and trigger endless draining. Re-route the hose up to the counter underside or clear the air gap cap.
- Using hand soap or too much detergent. Suds reach the leak tray, the sensor trips, and the drain pump runs for ages. Use the right pods or powder and run a cleaner cycle.
- Forgetting the disposer knockout. If the knockout is intact, the dishwasher tries to drain against a plug and repeats. Pop it out and fish the metal slug from the disposer.
- Leaving a spoon under the float. That tiny jam mimics a full tub. Lift the float, clear the spoon or seed, and listen for that small click as the switch moves.
- Ignoring a slow fill. Low water keeps the heater on longer and stretches the cycle. Open the supply valve fully and clean the inlet screen on the valve body.
- Pulling the unit with power live. Always cut the breaker before sliding the tub forward to reach the base. Sharp edges and live wires are a bad combo.
- Replacing parts before testing basics. A clogged filter, a kinked hose, or a sticky float solves more cases than a board swap. Spend ten minutes on checks before ordering anything.
Quick Parts Guide
Most nonstop-running calls end with zero parts, but sometimes a component really has failed. Common swaps include a float switch that no longer clicks, a door latch with worn plastic ears, a drain pump that hums but won’t move water, or a control board with a stuck relay. Match symptoms first, then test with a meter or a simple live check, depending on the part. If you’re unsure, stop and book service; mis-wiring a new board can cook it in seconds. Label wires before lifting them with tape.