L2 High

Firebird L2 Fault Code

The Firebird L2 fault code means: your boiler has stopped running because it has locked itself out, usually because it can't draw enough oil or light the flame.. It appears on 1 Firebird model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: remote lockout lamp
Typical repair cost £120-280 (including labour)

DIY fix possible

Check that you have enough oil in your storage tankEnsure the oil supply valve is fully openPress the illuminated reset button on the burner once

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Firebird models that show the L2 fault code

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

Source

Firebird L2 fault code information on this page is sourced and cross-checked against the official Firebird service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026