BoilerFaultCodesWorcester Bosch 2965 Fault Code
The Worcester Bosch 2965 fault code means: your boiler has sensed that the water inside is getting much hotter than it should be and has shut down as a safety precaution.. It appears on 10 Worcester Bosch models in our database.
Technical description: Flow temperature too high
What causes the Worcester Bosch 2965 fault?
This fault occurs when the water leaving the boiler exceeds its safe temperature limit, causing the system to shut down to prevent damage. The most common reason is a lack of water flow, often caused by a failing internal pump or a blockage in the pipes that stops heat from being carried away from the burner. It can also happen if a sensor fails and incorrectly reports that the water is overheating.
This fault is more frequent during the first cold spell of autumn when heating systems are turned on after months of inactivity, which can cause internal pumps to seize.
DIY fix possible
Ensure all radiator valves (TRVs) are turned to the highest settingCheck that the boiler pressure gauge is between 1 and 1.5 barReset the boiler using the display panel to see if the fault clears
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 2965 fault code
Click a model for the full fault code list and model-specific repair notes.
- 1000 Repair: £120-£250
- Greenstar 2000 Repair: £150-300
- Greenstar 27CDi Repair: £150-300
- Greenstar 28CDi Repair: £150-300
- Greenstar 4000 Repair: £150-300
- Greenstar 8000 Repair: £150-300
- Greenstar 8000 Life Repair: £150-350
- Greenstar 8000 Life System Repair: £150-300
- Greenstar 8000 Life/Style Repair: £120-280
- Greenstar 8000 Style Repair: £150-350
Source
Worcester Bosch 2965 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