How much does it cost to fix Ariston error code 6P1?

Typical repair cost for the Ariston 6P1 fault is £120-250 including labour.

6P1 High

Ariston 6P1 Fault Code

Q: What does the Ariston 6P1 fault code mean?

Your boiler is struggling to clear exhaust gases out through the flue, so it has safely shut itself down to prevent a build-up of fumes.

The Ariston 6P1 fault code means: your boiler is struggling to clear exhaust gases out through the flue, so it has safely shut itself down to prevent a build-up of fumes.. It appears on 1 Ariston model in our database.

Technical description: Fan air pressure switch error

Typical repair cost £120-250 (including labour)

Engineer required

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

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Ariston models that show the 6P1 fault code

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

HS Premium Repair: £120-250

Source

Ariston 6P1 fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026