LG Dishwasher F6 Error Code: Causes and Fixes
Quick answer: Water distribution fault
What you’ll notice
Wash results are poor; water distribution to the spray arms is inadequate.
LG
Dishwasher
Code F6
low severity
LG models: The LG filter is a twist-out assembly under the lower spray arm — rotate anticlockwise to remove. QuadWash models use four spray arms; check all four for limescale blockages when diagnosing spray-related codes. TrueSteam condensation during the cycle is normal, not a leak.
Common causes
- Spray arm holes blocked by limescale or food deposits
- Spray arm bearing worn — arm does not spin freely
- Water inlet pressure below the minimum required (typically 0.5 bar)
- Inlet filter clogged
Step-by-step fix
- Remove upper and lower spray arms (typically unscrew anticlockwise or lift off).
- Hold each arm under the tap and use a toothpick or skewer to clear each jet hole.
- Check that each arm spins freely when reinstalled.
- Clean the inlet hose filter.
Tools you may need
Toothpick or thin wireSmall brush
Prevention
- Use a dishwasher cleaner monthly in hard-water areas.
- Check spray arm rotation monthly.
When to stop DIY
Replace spray arms if jets cannot be cleared or the bearing is visibly worn.
FAQ
What does F6 mean on LG dishwasher?
F6 usually indicates: Water distribution fault.
Can I keep using the appliance with F6?
Use caution. Severity is low. Replace spray arms if jets cannot be cleared or the bearing is visibly worn.
How long does this fix usually take?
Typical first-pass troubleshooting takes 15–20 minutes.