How much does it cost to fix Potterton error code Sensor?

Typical repair cost for the Potterton Sensor fault is £120-200 including labour.

Sensor High

Potterton Sensor Fault Code

Q: What does the Potterton Sensor fault code mean?

Your boiler's temperature sensors are giving conflicting readings, which is causing the system to stop working reliably to prevent overheating.

Also written as SENSOR — same fault.

The Potterton Sensor fault code means: your boiler's temperature sensors are giving conflicting readings, which is causing the system to stop working reliably to prevent overheating.. It appears on 1 Potterton model in our database.

Technical description: Flow or return sensor out of calibration

Typical repair cost £120-200 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Potterton models that show the Sensor fault code

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

Envoy 30 Repair: £120-200

Source

Potterton Sensor fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.

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