How much does it cost to fix Baxi error code E02?

Typical repair cost for the Baxi E02 fault is £120-250 including labour.

E02 High

Baxi E02 Fault Code

Q: What does the Baxi E02 fault code mean?

Your boiler has switched itself off because it has become dangerously hot, likely due to a blockage in the water flow or a internal pump failure.

The Baxi E02 fault code means: your boiler has switched itself off because it has become dangerously hot, likely due to a blockage in the water flow or a internal pump failure.. It appears on 7 Baxi models in our database.

Technical description: Safety thermostat operated (overheat)

Typical repair cost £120-250 (including labour)

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 →

Baxi models that show the E02 fault code

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

130 HE (range) Repair: £120-250
Duo-tec Combi Repair: £120-250
Main Combi 24 Repair: £120-250
Main Combi 28 Repair: £120-250
Promax Combi Repair: £100-250
Promax Heat Repair: £100-£250
Promax Ultra Repair: £100-£250

Source

Baxi E02 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026