--- title: "Dishwasher error code PE" description: "LG dishwasher error code PE: The level sensor is a pressure switch reading a column of air in a small hose off the sump." url: "https://lgmiami.support/error-codes/dishwasher-water-level/" date_modified: "2026-09-05" Appliance type: "Dishwashers" --- # Dishwasher error code PE ### What PE means on this make The level sensor is a pressure switch reading a column of air in a small hose off the sump. Three things break it and only one of them is the sensor: the hose can block with the grease that gets everywhere in a dishwasher, the hose can perish and let air out, or the switch itself can drift. All three produce the same behavior — a machine that fills too much, fills too little, or refuses to start because it cannot trust the number. ### The other ways LG prints this one PE · 1PE · P E LG publishes a condition and then every string that can stand for it, and which one your machine shows depends on the panel it was built with — OE, E03 and E21 are one condition on a washer, and Er dS, F dS and r dS are one sensor on different evaporators. They are one page here, so whichever of them you searched for, this is the right page. ### Where this appears, and why not to clear it On the appliance’s own display. LG reports errors two ways: machines with a digital display show a code, and the laundry machines without one blink their indicator lights instead. Both are published by the maker and both are on this site. Photograph what the panel shows before cutting the power. On a refrigerator you can also force the last code back onto the display by holding Freezer Temperature and Express Frz together for three seconds — LG documents that, and it is the one thing that makes a first visit more useful. A code that has been reset is information a technician no longer has. ### What to do about it - Note the pattern: overfilling and underfilling both come from this one. - Check the filter and sump are clean, since the sensing hose comes off there. - Cycle the power at the breaker. - This is a visit rather than a kitchen job — the hose runs under the tub. ### Where this goes next The job this usually becomes is [diagnostic visit](/services/diagnostic-visit/), and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 419-0291](tel:+13054190291) and describe what the panel is doing before booking anything. Water level sensor What this one means What PE means on this make The level sensor is a pressure switch reading a column of air in a small hose off the sump. Three things break it and only one of them is the sensor: the hose can block with the grease that gets everywhere in a dishwasher, the hose can perish and let air out, or the switch itself can drift. All three produce the same behavior — a machine that fills too much, fills too little, or refuses to start because it cannot trust the number. The other ways LG prints this one PE · 1PE · P E LG publishes a condition and then every string that can stand for it, and which one your machine shows depends on the panel it was built with — OE, E03 and E21 are one condition on a washer, and Er dS, F dS and r dS are one sensor on different evaporators. They are one page here, so whichever of them you searched for, this is the right page. Where this appears, and why not to clear it On the appliance’s own display. LG reports errors two ways: machines with a digital display show a code, and the laundry machines without one blink their indicator lights instead. Both are published by the maker and both are on this site. Photograph what the panel shows before cutting the power. On a refrigerator you can also force the last code back onto the display by holding Freezer Temperature and Express Frz together for three seconds — LG documents that, and it is the one thing that makes a first visit more useful. A code that has been reset is information a technician no longer has. What to do about it Note the pattern: overfilling and underfilling both come from this one. Check the filter and sump are clean, since the sensing hose comes off there. Cycle the power at the breaker. This is a visit rather than a kitchen job — the hose runs under the tub. Where this goes next The job this usually becomes is diagnostic visit, and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 419-0291](tel:+13054190291) and describe what the panel is doing before booking anything. --- **[Read full article: Dishwasher error code PE](https://lgmiami.support/error-codes/dishwasher-water-level/)**