How much does it cost to fix Atag error code 102?

Typical repair cost for the Atag 102 fault is £140-£210 including labour.

102 High

Atag 102 Fault Code

Q: What does the Atag 102 fault code mean?

Your boiler has lost track of the water pressure inside the system because the internal sensor is sending an incorrect signal or has failed.

The Atag 102 fault code means: your boiler has lost track of the water pressure inside the system because the internal sensor is sending an incorrect signal or has failed.. It appears on 18 Atag models in our database.

Technical description: Pressure Sensor Error

Typical repair cost £140-£210 (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 102 fault code

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

Source

Atag 102 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 31 August 2026