119 High

Atag 119 Fault Code

The Atag 119 fault code means: your boiler has detected that a small safety wire or bridge connection inside its control panel has come loose or is missing, preventing the system from starting.. It appears on 4 Atag models 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: Link on X2 position 4 and 5 missing
Typical repair cost £100-200 (including labour)

Engineer required

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

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Atag models that show the 119 fault code

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

Source

Atag 119 fault code information on this page is sourced and cross-checked against the official Atag service / installation manuals for each affected model.

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