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LG Dishwasher lights flashing or blinking

If your LG dishwasher lights are flashing or blinking, the machine is usually telling you a key component is not doing its job. On this LG dishwasher lights flashing page, the most likely cause is a failed heating element or heating element assembly, since the control panel may start flashing when the water does not reach the right temperature in time. After that, check the water inlet valve, which can keep the dishwasher from filling properly, and then the door latch, where a bad micro switch can interrupt operation and trigger dishwasher flashing error lights. If those parts test good, the problem may be in the control board or main control board, especially if your dishwasher lights blinking issue happens randomly or the dishwasher is blinking and not starting. Testing parts like the heating element, valve solenoids, and latch switch with a multimeter is often the fastest way to narrow it down. Enter your model number on RepairClinic.com to find the exact LG replacement part that fits your dishwasher.

01 - LG Dishwasher Heating Element

The heating element heats up the water to operating temperature. If the water doesn’t reach the proper temperature after a set amount of time, a light on the control panel might start flashing. To determine if the heating element has burned out, use a multimeter to test it for continuity. If the heating element does not have continuity, replace it.
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Top Solution

02 - LG Dishwasher Heating Element Assembly

The heating element assembly heats up the water to operating temperature. If the water doesn’t reach the correct temperature after a set amount of time, a light on the control panel might start flashing. To determine if the heating element assembly has burned out, use a multimeter to test the heating element for continuity.
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Top Solution

03 - LG Dishwasher Water Inlet Valve

If the dishwasher lights are flashing or blinking, the cause could be a faulty water inlet valve. You can use a multimeter to test the valve's solenoids for electrical continuity to help determine if the component is functioning properly or not.
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Highly Likely

04 - LG Dishwasher Door Latch

A dishwasher's lights flashing or blinking could indicate a problem with a micro switch inside the door latch assembly. To determine if the micro switch is at fault, use a multimeter to test the switch for continuity. If the switch does not have continuity, replace it or the entire latch assembly.
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Highly Likely

05 - LG Dishwasher Control Board

The control board provides power to nearly every component of the dishwasher. It's possible that the board has shorted and is causing the lights to flash or blink unexpectedly. Check the owner’s manual for possible fault codes as one of the components may have failed. If the control board is not sending power to one of the components, it's likely the control board is at fault and will need to be replaced.
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Common

06 - LG Dishwasher Main Control Board

The main control board provides power to nearly every component of the dishwasher. It's possible that the board has shorted and is causing the lights to flash or blink. Check the owner’s manual for possible fault codes as one of the components may have failed. If the control board is not sending power to one of the components, it's likely the main control board is at fault and will need to be replaced.
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Common

Frequently Asked Questions

Why are my LG dishwasher lights flashing or blinking?
Can a bad heating element cause my LG dishwasher to blink and not start properly?
How do I know if the door latch is causing the flashing lights on my LG dishwasher?
Could a water inlet valve problem make my LG dishwasher lights blink?
How do I find the right LG dishwasher part for flashing light problems?
Should I replace the control board if my LG dishwasher lights keep blinking?

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