How much does it cost to fix Baxi error code Sensor Fault Neons?

Typical repair cost for the Baxi Sensor Fault Neons fault is £120-220 including labour.

Sensor Fault Neons High

Baxi Sensor Fault Neons Fault Code

Q: What does the Baxi Sensor Fault Neons fault code mean?

Your boiler is struggling to read its own temperature, so it has turned itself off to avoid heating the water incorrectly.

Also written as SENSORFAULTNEONS — same fault.

The Baxi Sensor Fault Neons fault code means: your boiler is struggling to read its own temperature, so it has turned itself off to avoid heating the water incorrectly.. It appears on 1 Baxi model in our database.

Technical description: Indicates a fault on the central heating or hot water temperature sensor.

Typical repair cost £120-220 (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 Sensor Fault Neons fault code

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

System 35/60 / 60/100 Repair: £120-220

Source

Baxi Sensor Fault Neons 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