E.04 .254 Emergency

Baxi E.04 .254 Fault Code

Also written as E04254 — same fault.

The Baxi E.04 .254 fault code means: your boiler has detected an issue with the internal electronics that manage the fuel supply, so it has safely shut down to prevent unsafe operation.. It appears on 1 Baxi model in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Fault in gas valve control circuit
Typical repair cost £180-350 (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 E.04 .254 fault code

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

Source

Baxi E.04 .254 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 7 July 2026