How much does it cost to fix Baxi error code E.02 – .16?

Typical repair cost for the Baxi E.02 – .16 fault is £250-450 including labour.

E.02 – .16 High

Baxi E.02 – .16 Fault Code

Q: What does the Baxi E.02 – .16 fault code mean?

Your boiler has experienced an internal electronic failure or a communication error between its main control components.

Also written as E0216 — same fault.

The Baxi E.02 – .16 fault code means: your boiler has experienced an internal electronic failure or a communication error between its main control components.. It appears on 24 Baxi models in our database.

Technical description: Permanent fault caused by channel service unit (CSU) time-out or printed circuit board (PCB) damage.

What causes the Baxi E.02 – .16 fault?

This fault occurs when the boiler's internal computer system suffers a critical communication failure or a physical hardware breakdown. It is typically caused by a malfunctioning main circuit board that can no longer send or receive signals correctly, or damaged internal wiring that has interrupted the connection between components. Essentially, the 'brain' of the boiler has stopped working, meaning it can no longer safely control the heating process.

Typical repair cost £250-450 (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 E.02 – .16 fault code

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

Source

Baxi E.02 – .16 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