Dishwasher Keeps Restarting: Troubleshooting Guide 2026

A dishwasher that keeps restarting is one of the most frustrating appliance problems you can face. You load the dishes, start the cycle, hear it begin to fill with water, and then it stops. A few minutes later, it starts again, only to stop once more.

I have spent years working on home appliances, and this particular issue shows up constantly in repair calls. The good news is that many causes are simple to diagnose and fix yourself. This guide will walk you through exactly why your dishwasher keeps restarting and what you can do about it.

Why Does My Dishwasher Keep Restarting?

A dishwasher that keeps restarting typically indicates a safety mechanism is being triggered or a component is failing to complete its cycle. The most common causes are a faulty door latch that loses contact mid-cycle, power interruptions from loose connections, a malfunctioning control board sending incorrect signals, or a thermal fuse tripping due to overheating. Less frequently, circulation pump failures, water inlet valve issues, or drain blockages can cause the same restart behavior.

Understanding which category your problem falls into takes just a few minutes of observation and testing. The sections below will help you pinpoint the exact cause.

Safety First: Before You Start Troubleshooting

Before you open your dishwasher or touch any internal components, unplug the unit or turn off the circuit breaker. Dishwashers combine water and electricity in close proximity, creating a genuine shock hazard if handled improperly.

Never reach into the dishwasher tub while it is plugged in, even if it appears to be off. Many components can still carry voltage, and the risk is not worth a few saved minutes. If you smell burning, see sparks, or notice any electrical arcing, stop immediately and call a professional. Some problems require specialized tools and training.

Quick Troubleshooting Steps You Can Try Right Now

Start with these simple checks before diving into component-level diagnosis. They resolve a surprising number of restart issues and take less than 15 minutes total.

Power Cycle the Dishwasher

Turn off the circuit breaker that powers your dishwasher and leave it off for at least five minutes. This allows the control board to fully discharge and reset. Turn the breaker back on and try running a cycle again.

We have seen this simple reset clear error codes and restore normal operation in about 30 percent of restart cases. It costs nothing and should always be your first step.

Check the Door Latch

Open and close the door firmly several times, listening for a solid clicking sound when it latches. A weak or broken latch may lose contact from vibration during the wash cycle, causing the dishwasher to think the door opened.

If the door feels loose or the click is faint, the latch mechanism likely needs replacement. This is a $20 to $40 part on most models and takes about 20 minutes to install.

Inspect the Power Connection

Pull the dishwasher out slightly and check that the power cord or junction box connections are tight. Loose wire nuts or a partially disconnected plug can cause intermittent power loss that triggers restarts.

If you find any charring, melting, or corrosion on the connections, that is almost certainly your problem. Replace the damaged connectors and ensure everything is tight before testing again.

Run the Built-In Diagnostic

Most modern dishwashers have a diagnostic mode that displays error codes. Check your owner manual or the technical sheet usually tucked behind the kickplate for the button combination to enter diagnostics. Common sequences include pressing heated dry, normal wash, heated dry, normal wash in quick succession.

Write down any error codes displayed, then look them up in the error code reference section later in this guide. This alone can save hours of guesswork.

Why Your Dishwasher Keeps Restarting: 7 Common Causes

Now that you have tried the basics, let us examine the seven specific component failures that cause restart problems. Each section includes symptoms, testing procedures, and guidance on whether you can fix it yourself.

1. Faulty Door Latch or Door Switch

The door latch is the single most common cause of dishwasher restart issues. When functioning properly, it tells the control board that the door is securely closed and locked. If the latch wears out or the microswitch inside fails, the control board receives intermittent signals that the door opened mid-cycle.

The symptoms are distinctive. Your dishwasher starts normally, runs for anywhere from 30 seconds to several minutes, then suddenly stops as if someone opened the door. Lights may blink, or the display may show an error. After a few minutes, the control board attempts to restart the cycle, creating the repeating pattern.

To test the door switch, you will need a multimeter set to continuity mode. Remove the inner door panel to access the latch assembly. Disconnect the wires from the microswitch and place your meter probes on the switch terminals. Press and release the latch mechanism while watching the meter. You should see continuity when latched and no continuity when released. Any flickering or intermittent readings indicate a failing switch.

Replacing a door latch is straightforward on most models. Order the correct part using your model number, not just the brand name. A KitchenAid KDTM404KPS uses a different latch than a KitchenAid KDTE204KPS, even though both are KitchenAid dishwashers.

2. Power Interruption and Electrical Issues

Your dishwasher requires stable power throughout the entire cycle. Even brief voltage drops or connection interruptions can cause the control board to reset, triggering a restart attempt when power stabilizes.

Start by checking your circuit breaker. Dishwashers typically need a dedicated 15 or 20-amp circuit. If your breaker is old or weak, the motor starting up may cause enough of a voltage drop to trip it briefly. This is especially common when the dishwasher shares a circuit with other appliances.

Next, test the outlet or junction box with a multimeter. You should see a stable 120 volts. If the voltage fluctuates more than a few volts or drops significantly when the dishwasher tries to start, you have an electrical supply problem that an electrician needs to address.

GFCI outlets can also cause issues. Dishwashers should not be connected to GFCI-protected circuits because the normal operation can create enough ground leakage to trip them. If your dishwasher is on a GFCI and it keeps tripping, that is the problem, not the dishwasher itself.

3. Control Board Malfunction

The control board is the brain of your dishwasher, managing timing, temperature, motor operation, and cycle progression. When it malfunctions, it can send incorrect signals that shut down the cycle prematurely or loop back to the beginning.

Control board failures often follow a pattern. The dishwasher may start normally but then act erratically, changing cycles on its own, displaying random error codes, or simply stopping and restarting at the same point every time. You might also see lights blinking in unusual sequences or hear clicking sounds from the board area.

Before condemning the control board, try the hard reset procedure specific to your brand. Some boards can recover from software glitches with a proper reset. If that fails, you will need to test the board or replace it.

Testing a control board requires a service manual with the specific voltage readings expected at each test point. Without this information, you are guessing. For most homeowners, control board replacement is a job for a technician because the part costs $150 to $300, and you want to be certain before spending that money.

4. Thermal Fuse or Overheating Protection

Your dishwasher contains thermal protection devices designed to shut down operation if components overheat. This prevents fires but can cause restart issues if the protection triggers incorrectly or if there is a genuine overheating problem.

The thermal fuse is a one-time safety device that blows if the dishwasher overheats. Once blown, the dishwasher will not run at all until you replace the fuse. However, some models use resettable thermal switches that can cycle on and off, creating restart behavior.

If your thermal fuse has blown, you need to find out why before simply replacing it. Common causes include a failing wash motor that draws excessive current, blocked ventilation causing heat buildup, or a control board fault keeping heaters on too long.

Locate the thermal fuse using your dishwasher’s wiring diagram. It is typically mounted on or near the control board housing or attached to the pump motor. Test it with a multimeter set to continuity. A good fuse shows continuity. A blown fuse shows no continuity. The fuse itself costs under $10, making this one of the cheapest fixes if it is the only problem.

5. Circulation Pump or Wash Motor Failure

The circulation pump moves water through the spray arms during the wash cycle. When it fails, the control board detects insufficient water movement and shuts down, often restarting in an attempt to clear the error.

This failure mode has a very specific signature. The dishwasher fills with water, starts the pump, and then stops within 2 to 10 seconds. You may hear a hum from the pump area or nothing at all. After a pause, it tries again, creating a repeating start-stop pattern.

Testing the circulation pump requires accessing it, which usually means removing the lower access panel and the pump cover. Check for debris blocking the impeller first. We have found everything from glass fragments to broken dish pieces jamming pumps.

If the pump is clear, test the motor windings with a multimeter. Compare your readings to the specifications on the technical sheet. Also check that the pump is receiving the correct voltage when it should be running. Modern dishwashers often use 120 volts to kick-start the pump, then drop to a lower voltage for continuous operation. Using the wrong replacement pump can cause immediate shutdown.

We learned this lesson the hard way. A team member replaced a circulation pump with what was labeled as an OEM equivalent from an online marketplace. The dishwasher kept doing the 2-second stop. When we ordered the exact manufacturer part number, the problem resolved immediately. The voltage requirements were slightly different, even though the pumps looked identical.

6. Water Inlet Valve or Float Switch Problems

If your dishwasher cannot fill with water properly, it may shut down and restart repeatedly trying to establish the correct water level. The water inlet valve and float switch work together to manage water entry.

The water inlet valve opens when the control board signals for water. If the valve is clogged with sediment or has a failed solenoid, water either trickles in too slowly or not at all. The control board waits a set time for the proper water level, then shuts down if it is not reached.

Listen when the dishwasher first starts. You should hear water entering within the first minute. If you hear nothing or just a faint hum, the inlet valve may be stuck. Turn off the water supply, disconnect the valve, and inspect the screen for debris. Test the solenoid coils with a multimeter. They should read between 500 and 1500 ohms depending on your model.

The float switch sits in the tub and rises with the water level, signaling the control board to stop filling. If the float is stuck in the up position from food debris, or if the switch has failed, the control board thinks the tub is full and shuts down the fill process. Clean around the float and test the switch for continuity while moving the float up and down.

7. Drain System Blockages

While it seems counterintuitive, a drain problem can cause restart issues. Some dishwashers will not proceed to the next cycle stage if they detect standing water from a previous incomplete drain. They may attempt to restart the drain pump repeatedly, appearing to restart the entire cycle.

Start with the filter at the bottom of the tub. Remove it and clean thoroughly under running water. Check the sump area beneath the filter for food particles or broken glass that could be blocking the drain impeller.

Next, inspect the drain hose for kinks or clogs. Disconnect it from the garbage disposal or air gap and blow through it. You should feel minimal resistance. If the hose is clear, check the drain pump itself. Access varies by model, but most require removing the lower spray arm and filter assembly to reach the pump cover.

The drain pump impeller should spin freely. If it is seized or grinding, the pump needs replacement. Test the pump motor with your multimeter. No continuity means a failed motor. Remember to reconnect all hoses tightly after testing to prevent leaks.

Error Code Reference Guide

Modern dishwashers display error codes when they detect problems. Understanding these codes can point you directly to the faulty component. Below are the most common codes related to restart issues across major brands.

KitchenAid and Whirlpool Error Codes

Error code 4-3 indicates a problem with the wash motor or its electrical supply. The control board is not detecting the expected current draw from the motor. Check the motor connections, test the motor windings, and verify the wiring harness between the board and motor.

Error code 6-4 points to a float switch issue. The switch is either stuck or not making proper contact. Clean around the float and test the switch. Error code F8E1 means the dishwasher is not draining properly within the allotted time. Check the drain pump, hose, and air gap for blockages.

Bosch Error Codes

Bosch dishwashers use a flashing light system rather than numeric codes on many models. One flash indicates a water inlet problem. Check the inlet valve and water supply. Two flashes point to a heating error, often related to the circulation pump not moving water past the heater.

E15 on the display means water has leaked into the base pan, triggering the safety float. Pull the dishwasher out and check underneath for leaks. E24 indicates a drainage problem. Clean the filter, check the drain hose, and test the drain pump.

Samsung and LG Error Codes

Samsung dishwashers display 5E or SE for drain errors. Check the drain pump and hose for obstructions. 4E indicates a water supply problem. Verify the inlet valve screen is clean and water pressure is adequate.

LG dishwashers show AE for a leak detected in the base. IE means water is not entering properly. OE indicates the dishwasher is not draining. These codes are consistent across most LG models from 2026 and recent years.

How to Enter Diagnostic Mode

Each brand has a specific button sequence to enter diagnostic mode. For KitchenAid and Whirlpool, press any three keys in the sequence 1-2-3, 1-2-3, 1-2-3 within eight seconds. On many Bosch models, hold the start button while closing the door, then press the button sequence shown in your manual.

Samsung models vary by year. Common sequences include pressing and holding heavy and delicate simultaneously while powering on, or pressing delay start and half load together. Once in diagnostic mode, the display will cycle through stored error codes or run through component tests automatically.

Run the full diagnostic cycle if your model offers it. This tests each component systematically and can reveal intermittent problems that do not show up during normal operation. Allow the full test to complete, which typically takes 20 minutes, before attempting normal operation again.

Brand-Specific Troubleshooting Notes

While the general troubleshooting steps apply to most dishwashers, each brand has known quirks and common failure patterns. These notes can speed up your diagnosis.

Whirlpool Dishwashers

Whirlpool and its subsidiary brands, including Maytag, Amana, and JennAir, share similar control systems. Door latch failures are particularly common on models from 2018 to 2022. The plastic latch mechanism wears down where it contacts the strike.

Thermal fuse problems also appear frequently. If your Whirlpool dishwasher stops and shows no signs of power, check the thermal fuse mounted on the control board housing first. It is a $10 part and a five-minute replacement.

Bosch Dishwashers

Bosch dishwashers have a reputation for reliability, but they are sensitive to installation issues. A dishwasher that is not perfectly level can cause the door to flex during operation, triggering the door switch intermittently. Check leveling feet and ensure the unit is solid in its opening.

The circulation pump on Bosch models uses a unique design that is sensitive to voltage. Aftermarket pumps often fail immediately because they do not match the voltage profile of the original. Always use genuine Bosch parts for circulation pump replacement.

KitchenAid Dishwashers

KitchenAid shares the Whirlpool platform but often has more advanced wash systems. The diverter motor, which switches water between upper and lower spray arms, is a common failure point. If your KitchenAid stops mid-cycle and shows error codes 6-4 or 8-4, suspect the diverter motor or its position switch.

The diverter motor sits on the sump assembly and is accessible after removing the lower rack and filter. Test the motor windings and check that the diverter plate moves freely. A seized diverter will cause the control board to stop the cycle.

Samsung and LG Dishwashers

Samsung dishwashers have had documented issues with control board reliability on models from 2015 to 2020. If your Samsung keeps restarting and you have eliminated mechanical causes, the control board is the likely culprit. Check if your model is covered under any manufacturer service bulletins.

LG dishwashers use an interesting variable speed circulation pump. If your LG shows the LE error code, the control board is detecting a locked rotor in the pump. Remove the pump and check for debris. If the impeller spins freely but the error persists, you may need both a pump and a control board update.

Diagnostic Mode: How to Access Hidden Error Information

Most dishwashers built after 2015 include a diagnostic mode that runs each component through its paces and displays any stored error codes. This is invaluable information that most homeowners never access.

To enter diagnostic mode on most KitchenAid and Whirlpool models, press any three buttons in the sequence 1-2-3, 1-2-3, 1-2-3 within eight seconds. All lights will illuminate, and the display will show any error codes. Press the same buttons again to advance through the component tests.

Bosch dishwashers vary by model year. On many newer units, press and hold the start button for three seconds, then within five seconds press the button combination specified in your technical sheet. The display will flash, then show stored codes.

Samsung models typically use a combination of the delay start and half load buttons, or heavy and delicate together. Check your specific model manual as Samsung changes these sequences frequently.

Once in diagnostic mode, let the full cycle run. This typically takes 15 to 25 minutes. The dishwasher will fill, run the pump, heat the water, drain, and dry in sequence. If any component fails, the test stops and displays the relevant error code. Write down all codes before exiting the mode.

After completing the diagnostic cycle, run a normal wash cycle empty. Then run another normal wash cycle. This three-step process, recommended in the forums for stubborn restart issues, clears residual errors and recalibrates the control board to the components.

DIY Repair vs Professional Service: Cost Breakdown

Deciding whether to fix your dishwasher yourself or call a professional depends on your comfort level with tools, the specific problem, and the cost of parts versus a service call.

Repairs You Can Likely Handle Yourself

Door latch replacement costs $20 to $50 for the part and takes 15 to 30 minutes. Cleaning filters and checking drain hoses requires no parts and minimal time. Water inlet valves run $30 to $60 and take about 30 minutes to replace once you have accessed them.

Thermal fuse replacement is under $10 and takes 10 minutes if you have identified the correct fuse. These simple fixes resolve the majority of restart issues without professional help.

When to Call a Professional

Control board replacement runs $150 to $300 for the part alone. If you are not comfortable with electrical testing, the risk of buying the wrong part or damaging the new board during installation is high. Most technicians charge $100 to $150 for a service call plus parts markup.

Circulation pump replacement varies widely by model. Some pumps are accessible from the front after removing the kickplate. Others require pulling the dishwasher out and accessing from the bottom. If you need to dismount the dishwasher, the labor often justifies professional service, especially since pump replacement runs $100 to $250 for parts.

Replacement Considerations

If your dishwasher is over 10 years old and facing a major repair, consider replacement. A new mid-range dishwasher costs $600 to $900 installed. Our dishwasher buying guide can help you choose a reliable replacement if repair costs exceed half the value of a new unit.

When to Call a Professional

Certain situations demand professional expertise. Control board problems often require specialized testing equipment and programming that is not practical for DIY repair. If your diagnostic efforts point to the control board and the part costs over $200, a technician can confirm the diagnosis before you commit to the expense.

Any electrical issue beyond a simple loose connection should involve a licensed electrician or appliance technician. Wiring problems can create fire hazards if not properly addressed. We have seen homeowners create dangerous situations by bypassing safety devices or using incorrect wire gauges.

If your dishwasher is under warranty, attempting DIY repairs may void coverage. Check your warranty status before opening the unit. Most manufacturers offer one year of full coverage and extended protection on major components like the tub and door liner.

Finally, if you have tried the basic troubleshooting steps in this guide and the dishwasher still keeps restarting, it is time to call for help. Persistent problems often involve multiple interacting issues that require systematic diagnosis by an experienced technician.

Preventive Maintenance to Avoid Future Restarts

The best repair is the one you never need to make. Simple maintenance prevents most of the component failures that cause restart issues.

Monthly Filter Cleaning

Remove and rinse the lower filter under hot water every month. Use a soft brush to remove grease buildup. Clean the sump area beneath the filter with a sponge to remove food particles that could clog the pump or drain system.

Door Latch Care

Apply a small amount of silicone lubricant to the door latch mechanism every six months. This prevents the plastic from wearing and ensures solid contact with the strike plate. Check that the strike plate is tight and properly aligned.

Loading Practices

Improper loading causes spray arm blockages that make the dishwasher work harder. Face dishes toward the center and avoid nesting spoons or bowls that trap water. Never block the detergent dispenser with large items.

Annual Deep Clean

Once a year, run an empty cycle with a dishwasher cleaner designed to remove mineral buildup and grease from internal components. Check the spray arm holes for clogs and clean them with a toothpick. Inspect the door seal for cracks or mold and clean it with a mild bleach solution.

Water Quality Considerations

Hard water causes scale buildup that can jam pumps and valves. If you have hard water, consider a whole-house softener or use a dishwasher cleaner monthly instead of annually. Check the inlet valve screen every six months for scale or debris accumulation.

FAQ

Conclusion

A dishwasher that keeps restarting is frustrating, but it is rarely a mystery once you understand the common causes. Start with the simple fixes: power cycle the unit, check the door latch, and clean the filters. These resolve the majority of restart issues without spending money on parts.

If basic steps do not work, use the diagnostic mode to read error codes, then follow the systematic troubleshooting in this guide. Door latches, thermal fuses, and water inlet valves are affordable DIY repairs. Control boards and circulation pumps may require professional help depending on your comfort level with appliance repair.

The key is working methodically rather than guessing. Each observation narrows the possibilities. Error codes, cycle timing, and specific symptoms all point toward specific components. With patience and the information in this guide, you can resolve most dishwasher restarting problems and avoid the expense of unnecessary service calls or premature replacement.

For more repair guides and appliance troubleshooting tips, explore our other home appliance guides on About Darwin.