How much does it cost to fix Baxi error code E26 186?

Typical repair cost for the Baxi E26 186 fault is £150-250 including labour.

E26 186 High

Baxi E26 186 Fault Code

Q: What does the Baxi E26 186 fault code mean?

Your boiler has detected an issue with the internal airflow sensors, which is preventing it from safely starting up and producing heat.

Also written as E26186 — same fault.

The Baxi E26 186 fault code means: your boiler has detected an issue with the internal airflow sensors, which is preventing it from safely starting up and producing heat.. It appears on 2 Baxi models in our database.

Technical description: Pressure switch

Typical repair cost £150-250 (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 E26 186 fault code

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

Solo 3 40 PF Repair: £150-250
Solo PF Repair: £150-250

Source

Baxi E26 186 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