LG Dishwasher Error Code 00:E3

The 00:E3 code means the steam generator did not reach its required water level during operation. The dishwasher's control board monitors how much water fills the steam generator before activating it, and when that level is not achieved within the expected time, the E3 fault is triggered. The most common causes are a faulty inlet valve, a bad water level sensor, or insufficient water supply pressure.

No, you should not continue operating the dishwasher while this code is active. The E3 fault is a protective shutdown designed to prevent the steam generator's heating element from running without adequate water, which can cause overheating and permanent damage to the unit. Resolve the underlying cause before running another cycle.

Repair costs depend on the root cause. If the fix involves cleaning the inlet screen or adjusting the supply valve, there may be no parts cost at all. Replacing a faulty inlet valve typically runs in the range of $40 to $120 for the part, while a water level sensor replacement is generally $20 to $80. Adding professional labor, total repair costs commonly fall between $100 and $300 depending on your area and the technician's diagnostic findings.

Start by checking that the water supply valve is fully open and that household water pressure is adequate. Next, inspect the inlet valve wiring and the water level sensor connector for loose or corroded connections. If connections are secure and supply pressure is fine, the inlet valve or level sensor may need to be tested with a multimeter and replaced if defective. Cleaning the inlet screen and descaling the steam generator are also worth attempting before replacing parts.

A reset may temporarily clear the code, but the error will return if the underlying problem is not fixed. To reset, you can power the dishwasher off at the circuit breaker for a few minutes and then restore power. If the fault reappears at the start of the next cycle, the inlet valve, sensor, or water supply issue still needs to be addressed.