BoilerFaultCodesWorcester Bosch E2 223 Fault Code
Also written as E2223 — same fault.
The Worcester Bosch E2 223 fault code means: your boiler is struggling to detect water moving through it, meaning it has switched off to protect itself and will not provide heating or hot water until the issue is resolved.. It appears on 11 Worcester Bosch models in our database.
Technical description: Flow sensor open circuit - Flow sensor disconnected or damaged.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Worcester Bosch models that show the E2 223 fault code
Click a model for the full fault code list and model-specific repair notes.
- 24 RSF Repair: £90-160
- 26 CDi Xtra Repair: £90-160
- 30i Junior Repair: £90-160
- 35 RSF Repair: £90-160
- Danesmoor Repair: £100-£190
- Greenstar 12i System Repair: £150-250
- Greenstar i Repair: £120-200
- Heatslave Repair: £100-£190
- Hideaway Repair: £90-160
- Junior 24i Repair: £90-160
- Junior 28i Repair: £90-160
Source
Worcester Bosch E2 223 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026