BoilerFaultCodesWorcester Bosch Fault 11 / 132 Fault Code
Also written as FAULT11132 — same fault.
The Worcester Bosch Fault 11 / 132 fault code means: your boiler has detected a change in its internal electronic communication system or a new part, and it needs to be officially acknowledged before it will start again.. It appears on 1 Worcester Bosch model in our database.
Technical description: System configuration: new BUS device. New ISM detected.
What causes the Worcester Bosch Fault 11 / 132 fault?
This fault occurs when the boiler's main internal computer detects a new electronic component or a communication shift within its wiring system. It is most commonly triggered after a power surge, a recent part replacement, or if the main circuit board loses its stored memory settings and needs to be re-told which model it is operating.
This fault may be slightly more common after summer storms, as power surges from lightning or grid instability can disrupt the boiler's electronic memory.
DIY fix possible
Locate the 'Reset' button on the front control panel.Press and hold the 'Reset' button for approximately five seconds.Wait for the boiler to restart and check if the error code has cleared.
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Gas Safe Register →Worcester Bosch models that show the Fault 11 / 132 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch Fault 11 / 132 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