How much does it cost to fix Baxi error code E06?

Typical repair cost for the Baxi E06 fault is £120-200 including labour.

E06 Medium

Baxi E06 Fault Code

Q: What does the Baxi E06 fault code mean?

Your boiler is struggling to accurately detect the temperature of your hot water, which means it will likely stop producing hot water until the faulty sensor is replaced.

The Baxi E06 fault code means: your boiler is struggling to accurately detect the temperature of your hot water, which means it will likely stop producing hot water until the faulty sensor is replaced.. It appears on 7 Baxi models in our database.

Technical description: Domestic hot water storage temperature sensor fault

Typical repair cost £120-200 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Baxi models that show the E06 fault code

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

130 HE (range) Repair: £120-200
Duo-tec Combi Repair: £120-200
Main Combi 24 Repair: £120-200
Main Combi 28 Repair: £120-200
Promax Combi Repair: £90-£160
Promax Heat Repair: £90-160
Promax Ultra Repair: £90-160

Source

Baxi E06 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