Low
P.2 on Vaillant ecoTEC

Your boiler is currently running a brief internal test to check its ignition settings and minimum gas flow, which usually happens during startup or after maintenance.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Test program where the appliance is operated with minimum gas volume (ignition gas volume) after successful ignition

From this model's manual
Verified against the Vaillant Ecotec installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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