Bosch 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.
Bosch
Dishwasher
Code F6
low severity
Bosch models: Bosch dishwashers have a three-stage filter: coarse screen, flat micro-filter, and cylindrical fine filter under the lower spray arm. Remove and clean all three together. Bosch drains actively using a pump — any standing water in the sump at mid-cycle is a blockage indicator, not normal residual water.
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 Bosch 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.