LG Dishwasher Repair in Toronto — Leaking water

• AE / E1 is LG's dedicated leak code and where every leaking call starts: LG's own support literature defines AE (older models read E1) as the base-pan leak sensor (float switch) detecting water under the tub, at which point the control commands a continuous protective drain so the cycle never finishes. It is a 'water in the base pan' fault, not a wash or fill fault, so we dry the pan and trace the actual seep path before condemning any part — replacing a pump on an AE that is really a sudsing or gasket leak fixes nothing.
• The float/leak switch itself (6601ER2001C, RepairClinic 4985714) is condemned only when the pan is bone-dry and AE still latches — a switch stuck in the tripped state tells the board it's flooded when it isn't. LG's flow has us tilt the unit ~45 degrees to drain any pooled water, let it dry, then meter the switch; we replace the 6601ER2001C on a confirmed bad-signal reading, not on the AE banner alone.
• The single most common AE that is NOT a failed component is over-sudsing from the wrong detergent: LG and PartSelect both note that hand-wash liquid or non-HE detergent foams over the tub and onto the base pan, tripping the float and posting AE (and on some models a bE suds code). LG's confirmation test is to run a cycle with no detergent and no load — if the foam and the code clear, the leak was suds, not a seal. We verify this on site rather than selling a gasket.
• A worn or detergent-crusted door/tub gasket is the classic real leak path on this platform: the door gasket 3920DD3005A (AP4437203 / PS3522654, supersedes 3920DD3003A; itself now superseded by the current part 3920DD3005H; fits LDF/LDS/LDT/LSDF tubs) goes brittle or develops a flat where the door catch seats, letting wash water weep out the front and down to the base pan to trip AE. LG's leaking flow has us run a cycle and watch the door corners for seep; a cracked or compressed gasket gets the 3920DD3005A (or the current 3920DD3005H), and we confirm the door closes square afterward.
• A worn sump-to-tub seal is the textbook 'leaking from the bottom with no front drip' fault. RepairClinic documents the LG pump/sump gasket MDS58387601 as the rubber seal between the sump bowl and the tub floor; when it perishes, water escapes during circulation straight into the base pan and posts AE without ever wetting the door. We pull the lower panel, pressure-watch the sump on a live wash, and replace the MDS58387601 seal rather than the whole sump when only the gasket has failed.
• A water inlet valve that won't fully close drives an overfill-then-leak: LG and PartSelect both flag a stuck inlet valve (5221DD1001F; AP5810251 / PS9495756, supersedes 5221DD1001A) as a common AE/FE cause — it keeps passing water after the fill window so the tub overfills and weeps to the base pan. We watch for a valve that dribbles with the cycle off (crack the door mid-fill — flow should stop instantly), meter the solenoid, and replace the 5221DD1001F when it leaks by; FE (overfill) on the same unit points to the same valve or the level sensor.
• A cracked or seam-split spray arm, or a loose drain-hose clamp, leaks low where there is no door gasket to catch it. LG's leaking guidance and PartSelect note that the lower spray arm (nozzle assembly AGB73932401; AP6233774, supersedes 4505818 / PS12078485) can crack and jet water at the bottom of the door, and that drain/circulation hose clamps work loose and weep at the connections — both pool in the base pan and trip AE. We clear and pressure-check the arm and re-clamp or replace the hose before touching the sealed pumps.

LG leaking water in Toronto — the local specifics

• The recurring LG-leaking pattern we see across Toronto is an AE code that turns out to be over-sudsing or a tired door gasket far more often than a failed pump — owners on hard water also bring us inlet valves stuck partly open that overfill to the base pan and trip AE/FE, and older QuadWash tubs that finally weep at the sump-to-tub seal.
• To these AE/leaking calls we carry the door gasket 3920DD3005A (current part 3920DD3005H), float/leak switch 6601ER2001C, inlet valve 5221DD1001F, the MDS58387601 sump seal and assorted drain/circulation hose clamps, and we run a no-detergent confirmation cycle first so we don't sell a seal when the real fault was suds.

For the full LG dishwasher module — every fault, part number and code — see LG dishwasher repair in Toronto, and for the same fault across all brands the dishwasher leaking water guide.