How to fix Worcester Bosch Greenstar 8000 Lifestyle fault code E265

What does the Worcester Bosch Greenstar 8000 Lifestyle E265 fault code mean?

The E265 fault code indicates a pump calibration error in the Worcester Bosch Greenstar 8000 Lifestyle boiler. This typically means that the boiler’s pump is not operating at the correct speed or pressure, which can affect the heating system’s efficiency.

Common Causes

  • Faulty Pump: A malfunctioning or damaged pump may not be able to maintain the required flow rate.
  • Electrical Issues: Problems with the wiring or control board can lead to incorrect signals being sent to the pump.

Can I fix it myself? (DIY)

It is recommended to call a Gas Safe Engineer for this issue, as it involves electrical components and potential safety risks. Attempting to fix it yourself may void the warranty or cause further damage.

Estimated Repair Cost (2026 UK Prices)

The estimated repair cost for the E265 fault code is around £250 to £400, depending on whether the pump needs to be replaced or if it’s a simpler electrical issue. This cost includes parts and labour from a qualified engineer.