Home › Washers › Bosch › E28 / F28
Bosch Washer E28 / F28 Error Code
Flow sensor fault. Here is what it means and how to clear it, easiest fix first.
Bosch reports this code as a problem with the flow sensor, which measures the water coming into the washer. It is an internal component and is not something an owner can repair.
Listed on Bosch's US support site; Bosch models sold in the UK and Europe may use a different code, so check your manual.
How to fix Bosch E28 / F28
Check the obvious first
Make sure the water tap is fully open and the inlet hose is not kinked.
Reset the washer
Turn the washer off and unplug it. If the floor around the outlet or cord is wet, switch off the washer's circuit breaker instead of touching the plug. Wait at least 30 seconds, then plug it back in and try again.
When to call a technician
If the code returns, contact Bosch support or a technician to test the flow sensor.
Parts that commonly cause E28 / F28
- Flow sensor (flow meter)
- Water inlet valve
Order parts by your exact model number so they fit.
Other Bosch washer codes
- E18 / F18Washer is not draining
- E17 / F17Water is not coming in fast enough
- E16 / F16Door is open or not locked
- E23 / F23Leak detected or AquaStop triggered
- E32 / F32Load is off-balance
- E33 / F33Too much suds
- E:30Water level problem (read the number after the code)
- E:36Drain pump blocked
- E:10i-DOS dosing pump blocked
- H9EHot water supply problem
- E19 / F19Water is taking too long to heat
- E20 / F20Unexpected heating
- E25 / F25Turbidity (water clarity) sensor fault
- E26 / F26 / F27Water level (pressure) sensor fault
- E56Internal communication error
- E80Motor drive circuit fault
- CLChild lock is on
Frequently asked questions
What does E28 / F28 mean on a Bosch washer?
Bosch reports this code as a problem with the flow sensor, which measures the water coming into the washer. It is an internal component and is not something an owner can repair.
Can I fix Bosch E28 / F28 myself?
Only the basic checks. You can safely try the steps above, but E28 / F28 usually points to a part or fault that needs a technician.
What if E28 / F28 keeps coming back?
A code that returns after a reset and the checks above usually means a part is wearing out. Note when E28 / F28 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.
Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.