BoilerFaultCodesWorcester Bosch 2916 Fault Code
The Worcester Bosch 2916 fault code means: your boiler has detected an internal electrical communication error, meaning it cannot properly coordinate its functions to provide heat and hot water.. It appears on 8 Worcester Bosch models in our database.
Technical description: Boiler electr. system fault
What causes the Worcester Bosch 2916 fault?
This fault occurs when the boiler's internal computer parts stop talking to each other, similar to a crash on a home PC. It is usually caused by a hardware failure on the main circuit board or a loose connection in the internal wiring that prevents the boiler from sending safety signals. Because the system can no longer double-check its own safety sensors, it shuts down immediately to prevent any damage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Worcester Bosch models that show the 2916 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 2916 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