BoilerFaultCodesWorcester Bosch POINT J Fault Code
Also written as POINTJ — same fault.
The Worcester Bosch POINT J fault code means: your boiler is receiving a request to turn on the heating, but it is failing to respond or light up correctly.. It appears on 4 Worcester Bosch models in our database.
Technical description: Demand lamp does not illuminate when central heating is set to ON / 230V at pin 4 of terminal X12
What causes the Worcester Bosch POINT J fault?
This fault occurs when the boiler receives an electrical signal from your thermostat telling it to provide heat, but the internal control board fails to acknowledge or process that command. The most common reason is a failure within the boiler's main brain or the internal wiring, meaning the system cannot bridge the gap between receiving your instruction and physically firing up the burner.
This fault often becomes apparent during the first cold spell of autumn when the heating system is switched on for the first time after being dormant all summer.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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 POINT J fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch POINT J 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