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LG Dishwasher PE Error Code

Water level sensor problem. What it means, which models show it, and how to clear it, easiest fix first.

LGAll LG dishwasher codes

PE
May need a pro

On certain older LG models, PE means the water level sensor, which helps prevent leaks, is not working correctly.

Compatible models

LG doesn't publish a model list for this code; it appears on LG dishwashers with a digital display. Check your owner's manual.

Also shown as

Only on certain older LG models.

Difficulty

Try the basic checks, but the usual fix is a technician's job.

Safety first: unplug the dishwasher (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix LG PE

  1. Reset the power

    Turn the dishwasher off, then switch off its circuit breaker for about 10 seconds and switch it back on. Power the unit up and start a fresh cycle to see whether the code returns.

  2. Note the code and model number

    Write down the exact code, when in the cycle it appeared, and the model and serial numbers from the rating label (usually on the side or top edge of the door or tub). With nothing safe left to check yourself, this lets the technician bring the right part on the first visit.

When to call a technician

If PE returns, request service so a technician can check the water level sensor.

Parts linked to PE

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Frequently asked questions

What does PE mean on a LG dishwasher?

On certain older LG models, PE means the water level sensor, which helps prevent leaks, is not working correctly.

Which LG models show the PE code?

LG doesn't publish a model list for this code; it appears on LG dishwashers with a digital display. Check your owner's manual.

Can I fix LG PE myself?

Only the basic checks. You can safely try the steps above, but PE usually points to a part or fault that needs a technician.

What if PE keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when PE appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Other LG dishwasher codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked