How much does it cost to fix Baxi error code Sensor Fault (Central Heating)?

Typical repair cost for the Baxi Sensor Fault (Central Heating) fault is £90-160 including labour.

Sensor Fault (Central Heating) High

Baxi Sensor Fault (Central Heating) Fault Code

Q: What does the Baxi Sensor Fault (Central Heating) fault code mean?

Your boiler has detected a problem with the internal part that measures the temperature of the water for your radiators, meaning your heating likely won't work.

Also written as SENSORFAULTCENTRALHEATING — same fault.

The Baxi Sensor Fault (Central Heating) fault code means: your boiler has detected a problem with the internal part that measures the temperature of the water for your radiators, meaning your heating likely won't work.. It appears on 1 Baxi model in our database.

Technical description: When the 40° neon is illuminated a fault on the central heating temperature sensor is indicated.

Typical repair cost £90-160 (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 (Central Heating) fault code

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

Bahama 80e / 105e Repair: £90-160

Source

Baxi Sensor Fault (Central Heating) 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