How much does it cost to fix Ariston error code E16?

Typical repair cost for the Ariston E16 fault is £120-200 including labour.

E16 Low

Ariston E16 Fault Code

Q: What does the Ariston E16 fault code mean?

Your boiler is receiving an incorrect signal from an optional temperature sensor mounted outside your home, likely due to a damaged wire or a faulty probe.

The Ariston E16 fault code means: your boiler is receiving an incorrect signal from an optional temperature sensor mounted outside your home, likely due to a damaged wire or a faulty probe.. It appears on 2 Ariston models in our database.

Technical description: Outdoor sensor short circuit (where fitted)

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 →

Ariston models that show the E16 fault code

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

Bravo 24 MFFI Repair: £120-200
Egis 24 MFFI Repair: £90-160

Source

Ariston E16 fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.

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