Why Does My Dishwasher Suddenly Have No Power? (2024)

You fill your dishracks with dirty dishes then close the dishwasher door—expecting to set the cycle, but the control panel is dead. You’re thinking to yourself, this has got to be one of the most frustrating appliance failures ever. It seems to always happen at the worst time—on the weekend or when you have company over.

Most Common Reasons a Dishwasher Stops Working

Door latch issues

A faulty door latch can prevent some dishwasher models from working. The dishwasher won’t start unless the latch detects that the dishwasher door is closed.

Power supply

Several different problems can prevent the dishwasher from getting electrical power. A tripped circuit breaker, bad electrical outlet or faulty wiring can prevent the dishwasher control panel from lighting up.

Control panel issues

Sometimes, the control power is getting power but faulty internal wiring or a failed control panel prevents the dishwasher from working. A service technician typically needs to check and repair the control panel when the dishwasher is getting power but the controls won’t light up.

Broken internal components

Dishwashers have internal components such as electronic control boards, switches, motors and wiring that can break. A short circuit in an internal component can prevent the controls from getting power.

Troubleshooting Your Dishwasher Issues

Sometimes, the dishwasher power problem can be resolved with the flick of a light switch.

You may be surprised to learn that many dishwashers have a light switch beside the garbage disposal light switch. The dishwasher light switch shuts off power to the dishwasher when the switch is in the “off” position.

So, the first step in troubleshooting a dishwasher that won’t power up is to check that light switch. Turning on that switch may fix the problem right away and you can start the dishwasher.

Some dishwashers don’t have that light switch installed beside the sink. If you don’t find such a switch or if the switch is there but it’s already turned on, then you’ll need to troubleshoot your dishwasher issues as described in the steps below.

Reset the house circuit breaker

A tripped circuit breaker is often found to be the cause of your dishwasher not getting power. Because you often can't tell whether the breaker has tripped, reset the breaker for the dishwasher by shutting it off and turning it back on. Check the dishwasher now to see if it powers up.

Check the dishwasher power cord

Some dishwashers have a power cord that plugs into an electrical outlet under the sink, while other dishwasher power cords are wired directly from the wall to the wires in the dishwasher’s junction box. If your dishwasher power cord plugs into an electrical outlet, make sure the power cord is plugged in.

If the power cord is plugged in, it’s possible the electrical outlet doesn’t work. Check the electrical outlet for power by plugging in a small lamp. If it doesn't light up, have an electrician repair the bad outlet.

Here’s a helpful troubleshooting video that shows this step and additional troubleshooting steps to take when your dishwasher has now power.

Examine junction box wiring

If your dishwasher’s power cord doesn't plug into an electrical outlet under the sink, then the power supply is hardwired into the junction box.
Check the power cord connections in the junction box. The above video shows how to follow these steps to check junction box wiring.

Note: If you’re not completely confident that you can safely complete this troubleshooting procedure, then it’s time to schedule a service technician to diagnose and repair your dishwasher.

  • Shut off the house circuit breaker for the dishwasher to disconnect electrical power—you don’t want electricity flowing to the junction box.
  • Remove the dishwasher’s bottom front access panel and toe panel. On most dishwashers, you’ll need to take out the mounting screws from each side and then pull off the panels.
  • Remove the screw from the junction box cover and pull off the cover.
  • Check the black wire connection and the white wire connection.

Reconnect any loose or disconnected wires. Reinstall the junction box cover and then reinstall the bottom front access panel and toe panel. Restore electrical power to the dishwasher and see if the dishwasher works.

Check the user interface control wiring

Many dishwashers have a user interface control in the control panel that connects to the electronic control board.

If the dishwasher still isn’t getting power, check the user interface control wire harness. The control panel won't light up if the wire harness is disconnected.

(The above video shows how to check the user interface control wiring in a common type of dishwasher using this procedure:)

  • Shut off power to the dishwasher.
  • Open the dishwasher door and remove the Torx screws from the outer edges of the inner door panel. So the outer door panel doesn’t fall off, support it with one hand as you remove the final screws.
  • Separate the outer door panel and the control panel and rest the outer panel on the floor.
  • Check the wire harness connection between the user interface control and the electronic control board.

If the user interface control wire harness is unplugged, reconnect it. Reassemble the dishwasher and restore power.

Schedule a Service Technician to Repair the Dishwasher

If the dishwasher still doesn't power up, then a blown fuse, defective user interface control, a failed electronic control board, a broken wire or other dishwasher issues could be preventing the dishwasher from getting power. Have a Sears service technician examine and repair the dishwasher.

You’ll likely see the technician perform the initial troubleshooting steps described above. Additional diagnosis requires live voltage checks, which only should be performed by a service technician with the proper training.

Schedule your dishwasher repair now!

With extensive experience, our technicians are skilled in repairing dishwashers of all makes and models, ensuring sparkling clean dishes with every cycle.

Call (213) 596-2538 or schedule online now.

Why Does My Dishwasher Suddenly Have No Power? (2024)

FAQs

Why Does My Dishwasher Suddenly Have No Power? ›

The most frequent reasons for a dishwasher suddenly losing power include door latch issues, power supply problems (such as tripped circuit breakers or faulty outlets), and control panel malfunctions.

Why is there not enough power to my dishwasher? ›

If the dishwasher won't do anything at all, the problem could be the power supply. Check the circuit breaker. If it has tripped, flip the switch to the “off” position and then turn it back on. If the circuit has not tripped, check to ensure that the appliance is properly plugged into its wall outlet.

How do I reset the power on my dishwasher? ›

Resetting your dishwasher is easy. Unplug it (or turn off power at the circuit breaker), wait some time for the electrical charge to clear out of the dishwasher (usually 1 to 5 minutes at most), and then power it up again. That's it. That's all it takes to reset.

Have to reset the breaker for the dishwasher to work? ›

Dishwasher - Reset Circuit Breaker
  1. Turn off the circuit breaker in the breaker box or remove the fuse in the fuse box.
  2. Wait approximately two minutes.
  3. Turn the circuit breaker on or reinstall the fuse.
  4. Try using the dishwasher again.

Why would my dishwasher suddenly lose power? ›

The most frequent reasons for a dishwasher suddenly losing power include door latch issues, power supply problems (such as tripped circuit breakers or faulty outlets), and control panel malfunctions.

Why is my Whirlpool dishwasher losing power? ›

Possible Solutions

If the unit has a plug-in power cord, make sure it is properly plugged in. If the unit is directly wired, make sure that the wiring has been correctly connected to the unit. Refer to the installation instruction for proper direct wiring instructions.

How to find circuit breaker for dishwasher? ›

This is usually located in the basem*nt, garage, or utility room. It contains various switches or breakers that control the electrical power in your home. Find the house circuit breaker marked for your dishwasher.

Why won't my dishwasher turn on suddenly? ›

Several factors can contribute to this, including: Power Issues: The dishwasher might not be plugged in, the circuit breaker could have tripped, or there might be a blown fuse. Door Latch: As mentioned earlier, if the door doesn't latch correctly, the dishwasher won't start as a safety measure.

What does power failure mean on a dishwasher? ›

PF (Power Failure) code indicates low operating voltage. The electrical supply voltage is out of range and might indicate a fault in your electrical installation. The washing program is temporarily stopped. As the electrical voltage improves, the machine continues to operate automatically.

How to tell if a dishwasher control board is bad? ›

Because you're looking for a short circuit, the multimeter should read only 1 or 2 ohms or less. This will indicate that the power is getting from the plug to the control board but not any further and the dishwasher is dead because the control board is faulty.

How do I know if my dishwasher fuse is blown? ›

If the fuse blows, your dishwasher shuts down. To troubleshoot this issue, unplug your dishwasher, then look behind the inner door for the thermal fuse, which will be attached by two wires to the control board. Disconnect them, then take out the fuse so you can test it.

Why would your dishwasher stop working? ›

The usual culprits are misalignment of the machine, a latch dirty with food, soap, and grime, a dishwasher rack sticking out, a micro switch in the latch is faulty, problems with the mechanical hinges or springs on the door, or the gasket seal is failing. Check each of these components.

How can I make my dishwasher more powerful? ›

6 Ways to Improve Your Dishwasher's Performance
  1. Use the right detergent. ...
  2. Make sure your rinse aid reservoir is full. ...
  3. Don't rinse your dishes before loading them. ...
  4. Run the hot water in your sink before you start the dishwasher. ...
  5. Run the dishwasher whenever you want. ...
  6. Clean your dishwasher with vinegar.
May 23, 2019

When I press start on my dishwasher, nothing happens.? ›

A dishwasher that won't start can often be remedied with simple solutions. Verifying the setting status of features like control lock or sleep mode, ensuring the door is latched or checking the power and water supply usually solves the problem.

Why is my dishwasher not getting enough water pressure? ›

Not enough water can also occur if your water pressure is low. Dishwashers require 20 to 120 PSI. The water line should be 3/8" O.D. (outside diameter) minimum copper tubing. Using a water line that is too small will restrict proper water flow into the dishwasher.

What is the most common problem with a dishwasher? ›

Dishwashers that won't drain are among the most common dishwasher problems, and this can be due to a clogged drain filter. If this happens, clear the filter of any debris so your dishwasher can drain efficiently. The dishwasher runs through the same drain that your garbage disposal uses.

References

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