How much does it cost to fix Baxi error code E134?

Typical repair cost for the Baxi E134 fault is £120-280 including labour.

E134 High

Baxi E134 Fault Code

Q: What does the Baxi E134 fault code mean?

Your boiler is struggling to light because it cannot detect a steady supply of gas or a flame within the required timeframe.

The Baxi E134 fault code means: your boiler is struggling to light because it cannot detect a steady supply of gas or a flame within the required timeframe.. It appears on 23 Baxi models in our database.

Technical description: Elapsed time gas valve open without gas(short request in a short period)

What causes the Baxi E134 fault?

This fault occurs when the boiler tries to ignite multiple times but fails to establish a steady flame. The most common reasons are a lack of gas reaching the burner, worn-out spark electrodes that can't light the fuel, or a faulty sensor that fails to tell the boiler the flame is actually lit.

This fault is more frequent during extreme cold snaps, as gas pressure in the external mains can fluctuate or moisture in the external pipework can freeze and restrict flow.

Typical repair cost £120-280 (including labour)

DIY fix possible

Check that your gas emergency control valve is fully open.If you have a prepayment meter, ensure you have sufficient credit.Check if other gas appliances, like a hob, are working to confirm gas supply.Reset the boiler by turning the selector knob to 'R' for five seconds.

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Baxi models that show the E134 fault code

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

Source

Baxi E134 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