How much does it cost to fix Baxi error code Pressure Gauge 3 or greater?

Typical repair cost for the Baxi Pressure Gauge 3 or greater fault is £120-250 including labour.

Pressure Gauge 3 or greater Emergency

Baxi Pressure Gauge 3 or greater Fault Code

Q: What does the Baxi Pressure Gauge 3 or greater fault code mean?

Your boiler has become dangerously over-pressurised, meaning there is too much water inside the system which could cause leaking or internal damage.

Also written as PRESSUREGAUGE3ORGREATER — same fault.

The Baxi Pressure Gauge 3 or greater fault code means: your boiler has become dangerously over-pressurised, meaning there is too much water inside the system which could cause leaking or internal damage.. It appears on 2 Baxi models in our database.

Technical description: Indicates a fault; the safety pressure relief valve will operate.

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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Baxi models that show the Pressure Gauge 3 or greater fault code

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

Source

Baxi Pressure Gauge 3 or greater fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

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