How much does it cost to fix Baxi error code Pressure Gauge below 1?

Typical repair cost for the Baxi Pressure Gauge below 1 fault is £80-150 including labour.

Pressure Gauge below 1 High

Baxi Pressure Gauge below 1 Fault Code

Q: What does the Baxi Pressure Gauge below 1 fault code mean?

Your boiler has lost the water pressure it needs to circulate heat, which means it will stop working until the system is topped up.

Also written as PRESSUREGAUGEBELOW1 — same fault.

The Baxi Pressure Gauge below 1 fault code means: your boiler has lost the water pressure it needs to circulate heat, which means it will stop working until the system is topped up.. It appears on 1 Baxi model in our database.

Technical description: May indicate a leak on the central heating system.

Typical repair cost £80-150 (including labour)

DIY fix possible

Locate the filling loop, which is a silver braided hose connecting two pipes underneath the boiler.Open the valves at both ends of the hose to let water into the system while watching the pressure gauge.Close both valves firmly once the needle sits between 1 and 1.5 bar.

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Baxi models that show the Pressure Gauge below 1 fault code

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

Bahama 100 Repair: £80-150

Source

Baxi Pressure Gauge below 1 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