How much does it cost to fix Worcester Bosch error code E2 233?

Typical repair cost for the Worcester Bosch E2 233 fault is £90-160 including labour.

E2 233 High

Worcester Bosch E2 233 Fault Code

Q: What does the Worcester Bosch E2 233 fault code mean?

Your boiler has lost its connection to the internal thermometer that measures the temperature of the water heading to your radiators, causing it to stop following your heating demands.

Also written as E2233 — same fault.

The Worcester Bosch E2 233 fault code means: your boiler has lost its connection to the internal thermometer that measures the temperature of the water heading to your radiators, causing it to stop following your heating demands.. It appears on 9 Worcester Bosch models in our database.

Technical description: Flow temperature sensor disconnected

Typical repair cost £90-160 (including labour)

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 233 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch E2 233 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