BoilerFaultCodesWorcester Bosch FAIL POINT J Fault Code
Also written as FAILPOINTJ — same fault.
The Worcester Bosch FAIL POINT J fault code means: your boiler has failed to ignite properly, meaning it cannot create the flame needed to provide you with heat or hot water.. It appears on 1 Worcester Bosch model in our database.
Technical description: Power on, CH demand, HW demand, Burner on flashing (Fan/APS fault)
What causes the Worcester Bosch FAIL POINT J fault?
This fault occurs when the boiler attempts to start up but cannot establish a stable flame to stay running. The most common reasons include a blockage in the gas supply, worn-out spark electrodes that can no longer ignite the fuel, or a control board that isn't sending the correct signals to the gas valve.
DIY fix possible
Check that your gas pre-pay meter has credit (if applicable)Check that other gas appliances in your home, like a hob, are working correctlyPress and hold the Reset button for five seconds
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like FAIL POINT J: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Worcester Bosch models that show the FAIL POINT J fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch FAIL 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 7 July 2026