Pump/Low Pressure Neon High

Baxi Pump/Low Pressure Neon Fault Code

Also written as PUMPLOWPRESSURENEON — same fault.

The Baxi Pump/Low Pressure Neon fault code means: your boiler has stopped working because there is either not enough water inside the system or an internal part that moves the water around has stopped running.. It appears on 1 Baxi 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: Illuminates if the circulating pump is faulty or the system pressure drops below the minimum requirement (0.2 bar).
Typical repair cost £90-250 (including labour)

DIY fix possible

Check the pressure gauge on the front of the boiler; if it reads below 1 bar, your system needs to be re-pressurisedLocate your external filling loop (a flexible metal or braided hose connecting two pipes)Open the valves on the filling loop to allow cold mains water in until the needle reaches 1.5 bar, then ensure the valves are tightly closed

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Baxi models that show the Pump/Low Pressure Neon fault code

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

Source

Baxi Pump/Low Pressure Neon 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