MODEL PROFILE
Signal or code
Error codes and display signals
The official manual linked for this model documents these messages. Some indicators apply only to variants that display them; each entry is labeled as a code, indicator, or status.
No matching signal for this model.
Model and error-code facts may be shown in the language of the original source.
MODEL OVERVIEW
About this model: LG LDNPQ445S
LG LDNPQ445S: pocket-handle FlushFit dishwasher with exact manual codes and Turbo-cycle context.
Identify the 46 dBA pocket-handle chassis
LDNPQ445S belongs to LG's FlushFit top-control series, but its pocket handle, 46 dBA rating and published dimensions define a particular version. The official specification prints the exact stainless-steel SKU, sixteen place settings, four spray arms and a third rack whose upper-rack height can be changed through three levels. Its body is 23 3/4 inches wide and equally deep, while the stainless tub and slim front are useful identification cues when comparing a customer photograph with the rating label. The linked owner booklet lists the LDNPQ445* family on its cover. Read together with the exact product and spec sheet, that cover establishes which troubleshooting pages apply. Check the full suffix before treating a part description or an internet code list as relevant to this dishwasher.
Observe status before interpreting a number
The strip of light at the bottom of the door has a practical diagnostic role. White pulses as a cycle runs, stays on when washing finishes, and turns off as the door opens. Flashing red means the appliance encountered an error, so capture the display at the same time as the light. The numerical display ordinarily gives estimated running time; with Delay Start it instead shows hours, which explains some apparently mysterious digits. A separate Tub Clean reminder flashes after thirty cycles, and low rinse aid has its own lamp. Control Lock is engaged by holding Extra Dry and Delay Start together for three seconds. Pressing START also requires the door to be closed within four seconds. These control behaviors matter before assuming that a timer or reminder is a failed component.
Separate Turbo behavior from water faults
This model's five programs include Auto, Heavy, Normal, Turbo and Downloaded. Turbo is described as an hour-long wash for heavily soiled dishes; the manual says it has no drying by default and suggests Extra Dry for improved drying. That is a different question from a cycle stopping with IE or OE on the panel. IE sends you to the water inlet and supply, including an accessible hose that may be frozen, kinked or obstructed. OE concerns discharge, where the drain hose, air gap or disposer and filters can impede flow. bE directs attention to inappropriate foaming detergent or poor leveling. Note whether the error appeared during filling, draining or immediately after a detergent change; one water-related checklist cannot replace the manual's three separate paths.
Respond to a leak without resetting away evidence
AE has a specific response because the table calls it water leakage. Turn off the supply and contact LG. The dishwasher can run its drain pump intermittently and even power itself back on until the leak condition is resolved. A quick power cycle therefore is not proof of repair, and repeated operation may hide useful evidence. The exact specification lists a safety float switch for leaks, but does not authorize bypassing it. FE indicates too much water supplied, HE a heater-circuit failure, and tE a water-temperature sensor fault. These are separate internal conditions for service rather than names for the same defect. Record the characters, any visible water and the precise LDNPQ445S identifier, then follow the manufacturer guidance for the displayed code.
Understand the drying and service codes
AutoVent Dry on this version uses an automatically opening door, so some door movement at the proper drying stage is expected. F31 is quite different: the manual defines it as a heated-air dry fan-motor error. F37 is assigned to the automatic door-opening motor. LG directs both faults to service, and neither should be inferred merely because plastic dishes remain damp. The manual also distinguishes downloaded-cycle labels, test-mode strings and rinse-aid setting values from actual errors. Its official specification includes Wi-Fi and SmartDiagnosis, but the number visible on the appliance remains the first piece of evidence. During installation, the spec recommends positioning the machine within twelve feet of the sink for drainage. Keep that physical route in mind when OE follows installation, while referring F31 or F37 to an authorized technician.
Verified model details
Exact LG support row links this owner manual to LDNPQ445S
Source for this detail · Source page: 1A red floor light and screen code distinguish a fault from a finished cycle
Source for this detail · Source page: 27Turbo omits drying unless Extra Dry is selected
Source for this detail · Source page: 45
This description summarizes the linked source documents; check each cited source for your exact model and region.
Manufacturer source
Open official source
Smart Top Control FlushFit Design Dishwasher - LDNPQ445S | LG USA
Open official sourceIf there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.