F19 on an LG oven means the main control board has failed or detected a critical internal fault. A hard reset at the breaker clears it temporarily in some cases, but if it returns the board itself usually needs replacement. EBR-series control boards for LG ranges run $150-300 depending on model.
F19 isn't like most error codes where you swap a $30 sensor and call it a day. This one usually means the board itself is cooked. I've seen it happen after power surges, after someone ran the self-clean cycle on a hot summer day, and just from plain old age. Ignore it and your oven won't heat at all. You're basically looking at a $150-300 board replacement most of the time.
Phillips #2 screwdriver, Torx T20 screwdriver (some models use this on the back panel)
What Does the F19 Code Mean?
When I walk into a kitchen and see F19, I'm already reaching for my Phillips head. This isn't a sensor problem or a bad element. It's a communication breakdown inside the oven's brain, basically the main control board saying it can't do this anymore. You're looking at the rear of the unit, not the cavity itself. And honestly, once you've seen a few of these, the repair's pretty straightforward.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Control board internal component failure40%
Power surge or voltage spike causing board damage24%
Thermal damage from prolonged oven use at high temperatures22%
Wiring fault sending incorrect signals to the board14%
Symptoms You May Notice
F19 is stuck on the display and won't clear no matter what button you press.
Oven won't heat at all, bake or broil, even though the clock and display are working fine.
Display shows garbled characters, random symbols, or just goes completely dark in the middle of a cycle.
Oven starts preheating, gets to 200-250 degrees, then cuts off abruptly with F19 on the screen.
Control panel buttons feel like they're responding but nothing actually happens, oven just sits there.
Can you reset a Lg oven to clear the F19 code?
Go to your main electrical panel and flip the double-pole breaker for the oven to Off. Set a timer for 60 seconds, don't guess at it. The capacitors on the board need that full minute to drain completely. Flip the breaker back on and watch for F19. If it's gone, run the oven at 350 for 20 minutes to confirm it's holding. If F19 comes right back on, the board's fried and no amount of resetting will fix it.
Tools Required for Diagnosis
Phillips #2 screwdriverTorx T20 screwdriver (some models use this on the back panel)Needle-nose pliers (for stubborn wiring connectors)Smartphone (photograph the wiring before you touch anything)Multimeter (for voltage check at board input terminals)Work gloves (those back panel edges are genuinely sharp)
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
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
Main Control Board (EBR series)EBR74798603 · $150–$300
EBR74798603
$150 – $300
Frequently Asked Questions
How do I find the correct LG oven control board part number?
The model number's the key. Check the sticker inside the storage drawer frame at the bottom of the range, or on the left side of the door opening. Don't buy a board based on a photo online. LG's EBR-series boards look nearly identical but carry different firmware depending on whether your oven has convection, air fry, or ProBake Convection. Order the wrong one and you'll get a board that powers on but the button functions won't match your actual oven. Use the full model number, something like LRE3194ST, and cross-reference it directly with the supplier.
Can I test whether the LG oven control board is actually bad before buying one?
Yeah, you can do a basic voltage check. Set your multimeter to AC voltage and put the probes on the L1 and Neutral input terminals on the board with the oven powered on. You should see 120V. If the power's there and the board's still dead or stuck on F19, the internal processor or the onboard transformer has failed. There's nothing to fix inside the board itself. No user-serviceable parts, no components you can swap out at home. Don't waste time trying to solder anything. Just swap the whole assembly.
My F19 only happens when the oven gets hot. Could it still be the board?
Absolutely, and honestly that's one of the more common patterns I see with this code. When the oven heats up, everything expands slightly, including the circuit board. If there's a hairline crack in a solder joint or a capacitor that's on its way out, that thermal expansion breaks the connection and throws F19. Works fine stone cold, runs for 20 minutes, then boom. The fix is still a board replacement. You can't really track down a microscopic solder crack without specialized equipment, so don't go chasing it.
Is it worth replacing the control board on a 10-year-old LG oven?
Depends on the shape of the rest of it, honestly. If the oven's otherwise solid and the door seals are good, a board swap at $150-300 for parts is usually worth it. LG builds their ranges to last 15+ years. But if you've already replaced an element, the door hinges are shot, or the cooktop glass is cracked, you're probably throwing good money after bad. I usually tell people to use $400 total repair cost as their cutoff. More than that on a 10-year-old range and you're better off putting that toward something new.
Will a surge protector prevent F19 on my LG oven?
A regular power strip won't do it. Your range runs on 240V and those strip protectors are rated for 120V circuits. What you actually want is a whole-home surge protector installed at your main breaker panel. An electrician can do it in under an hour and they typically run $150-400 installed. Worth every penny because it protects every appliance in the house. I recommend these to every customer whose board got killed by a surge. Cheaper than buying a new control board.
How long does a control board replacement actually take?
If you've done it once, you can knock it out in about 45 minutes. First time? Budget 90 minutes and don't rush the wiring part. The physical swap is easy. It's the careful connector transfer that takes time. Pull the range out, remove the back panel, swap the board connector by connector using your photo as a reference, button it all back up. The part itself is usually the longer wait, somewhere between 3-7 business days depending on where you order from. Some LG dealers stock EBR boards locally if you need it faster.