BoilerFaultCodesWorcester Bosch T2 Fault Code
The Worcester Bosch T2 fault code means: your boiler is failing a self-test of its internal fan, which is preventing the system from starting up safely.. It appears on 11 Worcester Bosch models in our database.
Technical description: Fan test – checking the basic fan
What causes the Worcester Bosch T2 fault?
This fault occurs when the boiler's control system tries to start the fan but doesn't receive the correct feedback signal telling it the motor is spinning. The most common reason is that the fan motor has physically worn out or its internal electronics have failed, though it can also be caused by loose wiring connections or a fault on the main control board.
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 T2 fault code
Click a model for the full fault code list and model-specific repair notes.
- 24 RSF Repair: £180-£350
- 26 CDi Xtra Repair: £180-£350
- 30i Junior Repair: £250-450
- 35 RSF Repair: £180-£450
- Danesmoor Repair: £180-450
- Greenstar CDi Compact
- Greenstar Si Combi / i System Repair: £220-450
- Heatslave Repair: £250-£450
- Hideaway Repair: £220-380
- Junior 24i Repair: £180-£350
- Junior 28i Repair: £180-£350
Source
Worcester Bosch T2 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