LG Dishwasher Error Code E1

E1 on an LG dishwasher means the flow meter located in the air breaker assembly did not detect the required number of water flow pulses during the fill cycle. The control board waits up to 4 minutes for the pulse count to reach the expected level, and if it does not, the E1 fault is triggered and the cycle is halted. This is most commonly caused by a closed water supply valve, low water pressure, or a clogged flow meter.

A reset may temporarily clear the E1 code, but the error will return if the underlying cause has not been resolved. To reset, press and hold the Power button or disconnect the dishwasher from power for a few minutes. The code will reappear at the start of the next fill cycle if the water supply issue or flow meter fault is still present.

If the fix is simply opening a shutoff valve or cleaning the flow meter, there is no parts cost involved. If the water inlet valve needs replacement, parts typically range from $20 to $60 depending on the model. If the air breaker flow meter assembly requires replacement, parts can range from $15 to $50. Adding a professional technician's labor, total repair costs generally fall between $80 and $200.

Start by confirming the water supply shutoff valve under the sink is fully open. If the valve is open, check the water inlet hose for kinks and inspect the inlet valve screen for sediment buildup. If those are clear, the air breaker flow meter may need to be cleaned or replaced. In some cases the water inlet valve solenoid itself has failed and will require replacement.

No, the dishwasher is designed to stop operating when E1 is triggered precisely to prevent the unit from running without adequate water. Running the pump and heating element dry can cause serious damage to internal components. The dishwasher should not be used until the water supply issue is identified and corrected.