How much does it cost to fix Baxi error code E.04 – .10?

Typical repair cost for the Baxi E.04 – .10 fault is £100-280 including labour.

E.04 – .10 High

Baxi E.04 – .10 Fault Code

Q: What does the Baxi E.04 – .10 fault code mean?

Your boiler is trying to start up but cannot light the gas flame to provide heating or hot water.

Also written as E0410 — same fault.

The Baxi E.04 – .10 fault code means: your boiler is trying to start up but cannot light the gas flame to provide heating or hot water.. It appears on 24 Baxi models in our database.

Technical description: Failure to light (could be gas supply issue).

What causes the Baxi E.04 – .10 fault?

This fault occurs when the boiler's control system attempts to start the combustion process but fails to detect a stable flame after several attempts. The most common reasons include a lack of gas reaching the burner, worn-out spark electrodes that can no longer ignite the gas, or a fault within the gas valve itself.

This issue is more frequent during extreme cold snaps, as external gas meters or regulators can sometimes freeze, restricting the flow of gas to the property.

Typical repair cost £100-280 (including labour)

DIY fix possible

Check if other gas appliances, like a hob, are working to confirm gas supply.Verify that your gas meter has credit if you use a pre-payment meter.Reset the boiler by turning the selector switch to the 'R' position for five seconds.

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Baxi models that show the E.04 – .10 fault code

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

Source

Baxi E.04 – .10 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