Written by
Marcus Lindqvist Appliance Care EditorPublished October 26, 2026
VERIFIED
Error code3
ApplianceCooktop
LG’s table of cooktop codes lists 3 as a thermistor error.
Owner reset
Start with the Power ON/OFF control. If needed after that, drop power at the breaker for 30 seconds before turning the breaker back on. Trouble that continues means service.
Linked codes
Code 2: also a thermistor error, with identical steps
Code 4: touch pads in prolonged contact with metal or water
When 3 refuses to clear, San Francisco owners can ring (415) 223-7887 and read through LG cooktop repair. Share the model number and what the reset did.
Model compatibility: LG reuses codes across series and model years, so 3 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Code 3 on an LG cooktop is a thermistor error.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your LG appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your LG appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
