r2 Low

Worcester Bosch r2 Fault Code

Also written as R2 — same fault.

The Worcester Bosch r2 fault code means: your boiler is currently undergoing a factory reset to restore its internal settings to their original state.. It appears on 2 Worcester Bosch models in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Display shows r2 followed by [ ] during factory reset

DIY fix possible

Ensure the boiler is not interrupted while the reset process is running.Wait for the display to complete the cycle and return to its normal standby mode.If the code persists for more than 10 minutes, turn the boiler off at the fused spur for 30 seconds and switch it back on.

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Worcester Bosch models that show the r2 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch r2 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