The TCL code on an LG washer is a maintenance reminder to run a Tub Clean cycle. To clear it, add a cleaning tablet or vinegar and select the Tub Clean setting on your control panel.
So basically every 30 wash cycles, your LG's firmware tosses up TCL as a heads-up. It's not breaking anything yet. But if you keep blowing past it, two things happen: it escalates to ECL, which is the more annoyed version of the same reminder, and you start getting that musty wet-dog smell on clothes you just washed. I've seen door gaskets so caked with black mold they had to be replaced. A $3 tablet now beats a $45 gasket later.
LgWasherSeverity: low100% DIY Success
Time to Fix
60–90 min
Difficulty
beginner
Parts Cost
—
Tools Needed
Affresh washing machine cleaner tablet OR LG Tub and Drum Cleaner (drop in drum, not dispenser), OR 1.5 cups white vinegar poured directly into drum (free alternative)
What Does the TCL Code Mean?
OK so here's the deal. TCL isn't a fault code, it's just your washer counting to 30 and raising its hand. LG built this into pretty much every model from around 2008 forward because front-loaders especially have this tendency to grow stuff inside the drum if you don't flush them out periodically. The washer'll still run your laundry fine. But ignore it long enough and you'll hit ECL, and then your shirts start smelling like they were washed in a fish tank.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Washer has not had Tub Clean run in an extended period60%
Cycle counter reached 30-cycle threshold (normal and expected)40%
Symptoms You May Notice
TCL shows up on the display panel every single time you power the machine on and just sits there staring at you until you actually run the cycle.
Your laundry smells faintly musty or damp even right out of the washer, especially if you've been ignoring TCL for a few rounds already.
The washer runs completely normally otherwise, normal agitation, normal spin, no error beeps, nothing stopping, just that code sitting on the display.
If it's been a really long time, you might spot a black or pinkish residue in the rubber door gasket fold when you pull it back to check.
Can you reset a Lg washer to clear the TCL code?
Complete the Tub Clean cycle all the way through without interrupting it. The counter resets automatically when the full cycle finishes. If TCL's still on the display after that, press and hold the Tub Clean button for 3 seconds while the machine is powered on. Still stuck? Power off the washer, wait a full 60 seconds, then power back on. Counter starts at zero and TCL won't show again until another 30 cycles go by.
Tools Required for Diagnosis
Affresh washing machine cleaner tablet OR LG Tub and Drum Cleaner (drop in drum, not dispenser)OR 1.5 cups white vinegar poured directly into drum (free alternative)
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Frequently Asked Questions
Can I ignore TCL?
For a little while, yeah. The washer's not going to lock up or refuse to run your laundry. But what happens when you keep ignoring it is the code escalates to ECL, which is basically LG's firmware getting louder about the same request. And while all that's going on, mold and soap scum are quietly building up in your door gasket, the drum, and that rubber fold where the door seals. I've pulled gaskets out that were so black with mold they looked like they'd been in a swamp. A 90-minute Tub Clean cycle costs you basically nothing. A new door gasket runs $45-80 in parts alone.
What happens if I never run Tub Clean?
The progression goes TCL, then ECL, then the smell hits. Your clothes come out smelling like wet towels that sat in a pile for two days, even though you just washed them. That's mold transferring from the drum and gasket onto the fabric. Front-loaders are way worse for this than top-loaders because water pools in the door gasket fold. Eventually you're looking at scrubbing the gasket with mold killer or replacing it entirely if it's too far gone. I've also seen the drum develop a biofilm coating you can actually feel when you run your hand along the inside. Don't let it get there.
Do I need a special cleaner for Tub Clean?
LG officially recommends their own LG Tub and Drum Cleaner or Affresh tablets, and honestly either one works great. A single Affresh tablet runs about $3-4 and does the job. But here's the thing: plain white vinegar poured straight into the drum works really well for routine maintenance too. Like a cup and a half, right in the drum, not the dispenser. The one thing you absolutely can't do is mix bleach and vinegar in the same cycle because that produces chlorine gas and it'll make you feel sick fast. Skip regular dish soap too, it foams way too much and can actually make a mess inside the drum.
How do I reset the TCL counter?
The only real way to reset it is to run the full Tub Clean cycle all the way to completion. The firmware marks the cycle as done at the end of the full 60-90 minute run, and that's what zeros out the counter. Start the cycle and cancel it partway? Doesn't count. If TCL's still showing after a completed cycle, hold the Tub Clean button for 3 seconds. That usually clears it right up. Then the counter starts fresh and you won't see TCL again until another 30 cycles go by.
What's the difference between TCL and ECL on my LG washer?
TCL is the polite first reminder at 30 cycles. ECL is what shows up if you keep ignoring TCL, basically LG's firmware sending a second, more insistent message. Think of TCL as the first text and ECL as the follow-up. Neither one locks the machine or stops your laundry from running. The fix is the same for both: run Tub Clean. The counter resets either way once the cycle completes. If you're already seeing ECL, run Tub Clean twice back to back just to give the drum a really thorough flush.
Will skipping Tub Clean affect my LG warranty?
Actually worth knowing about. LG's warranty includes a maintenance clause, and running Tub Clean regularly counts as standard required maintenance. If you ever call LG service for a drum issue, gasket failure, or odor complaint and they can see you've never run Tub Clean, they can flag it as neglected maintenance and that's a problem for your claim. Build the habit now. Run it every 30 cycles, takes 90 minutes, done. You'll never have to argue about it with a warranty rep if something else goes wrong down the road.