BoilerFaultCodesWorcester Bosch 8/2/8 Fault Code
Also written as 828 — same fault.
The Worcester Bosch 8/2/8 fault code means: your boiler's internal sensor that detects water pressure has stopped working, meaning the system can no longer accurately read how much water is inside.. It appears on 1 Worcester Bosch model in our database.
Technical description: Water pressure sensor generates a fault code. The digital water pressure sensor is defective.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Worcester Bosch models that show the 8/2/8 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch 8/2/8 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