BoilerFaultCodesWorcester Bosch 2967 B Fault Code
Also written as 2967B — same fault.
The Worcester Bosch 2967 B fault code means: your boiler has sensed an unusual temperature difference between internal sensors, suggesting that water isn't flowing through the system correctly.. It appears on 4 Worcester Bosch models in our database.
Technical description: Flow / heat exchanger temperature sensor differential too great
DIY fix possible
Check that all radiator valves are fully openEnsure the central heating system pressure is between 1.0 and 1.5 barBleed all radiators to remove trapped air
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Worcester Bosch models that show the 2967 B fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 2967 B 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 7 July 2026