E00 Medium

Worcester Bosch E00 Fault Code

The Worcester Bosch E00 fault code means: your boiler has detected trapped air inside the system that is preventing the water from circulating efficiently.. It appears on 1 Worcester Bosch model in our database.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description: Automatic Air Vent
Typical repair cost £90-180 (including labour)

DIY fix possible

Check your boiler pressure gauge and ensure it is set between 1 and 1.5 barBleed all radiators in the house starting from the ground floor and moving upwardsTop up the boiler pressure again if it has dropped after bleeding the radiators

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Worcester Bosch models that show the E00 fault code

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

Source

Worcester Bosch E00 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