LG Dishwasher L2 Error Code: Secondary Leak Sensor
Quick Answer
L2 on an LG dishwasher is functionally identical to AE -- a leak sensor in the base pan has been triggered -- but it originates from a different sensor position than AE. The same diagnostic logic applies: start by unplugging for 2 hours to allow condensation to dry before assuming a real leak.
L2 on an LG dishwasher is functionally identical to AE -- a leak sensor in the base pan has been triggered -- but it originates from a different sensor position than AE. The same diagnostic logic applies: start by unplugging for 2 hours to allow condensation to dry before assuming a real leak. The same false-trigger profile exists (condensation from hot cycles, over-sudsing) and the same repair path applies for genuine leaks (door gasket, sump seal). If L2 and AE appear together or in close succession, the base pan has genuine water accumulation.
What Does the L2 Code Mean?
L2 is a secondary base pan leak sensor fault. Same cause and fix procedure as AE. Unplug 2 hours, let the pan dry, and inspect door gasket and sump if the code returns.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Symptoms You May Notice
- L2 displayed on control panel
- Dishwasher stops mid-cycle or will not start
- May appear alongside or alternating with AE
- No visible puddle under unit in condensation cases
Can you reset a Lg dishwasher to clear the L2 code?
After the 2-hour unplug or after fixing a genuine leak, power on without starting a cycle. If the base pan is dry, L2 will not appear on startup. For a full reset after repair, unplug for 60 seconds.
Tools Required for Diagnosis
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Unplug the dishwasher and leave it unplugged for a minimum of 2
Unplug the dishwasher and leave it unplugged for a minimum of 2 hours at room temperature. After 2 hours, plug in and power on without running a cycle.
Remove the kick plate and inspect the base pan with a flashlight
If the door gasket is the identified source
Replacement Parts
If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.
| Part Name | OEM Number | Estimated Price |
|---|---|---|
| Door GasketAHT73236503 · $22–$38 | AHT73236503 | $22 – $38 |
| Leak SensorAEB72909507 · $15–$25 | AEB72909507 | $15 – $25 |
Repair vs. Replace Calculator
Frequently Asked Questions
What is the difference between LG AE and L2?
If both AE and L2 appear, is it more serious?
Related Lg Dishwasher Error Codes
Same Fix Works on These Brands
Lg shares the same hardware platform with these brands. The diagnosis and repair steps are identical.
Models Known to Experience L2 Errors
This repair applies to most Lg dishwashers with this error code. Common model numbers include:
LDFN4542D, LDF5545ST, LDFS5788S, LDP6763ST, LDFN3432T, LDFN4542S, LDFN4542W
Last verified for technical accuracy on March 14, 2026