How much does it cost to fix Baxi error code E.02 – .20?

Typical repair cost for the Baxi E.02 – .20 fault is £90-180 including labour.

E.02 – .20 High

Baxi E.02 – .20 Fault Code

Q: What does the Baxi E.02 – .20 fault code mean?

Your boiler's internal computer settings have been altered or misconfigured, preventing it from operating correctly.

Also written as E0220 — same fault.

The Baxi E.02 – .20 fault code means: your boiler's internal computer settings have been altered or misconfigured, preventing it from operating correctly.. It appears on 24 Baxi models in our database.

Technical description: Jumper 2 changed – check position of jumper 2.

What causes the Baxi E.02 – .20 fault?

This fault occurs when the boiler's control board detects that the physical configuration pins, known as jumpers, have been moved or are making a poor connection. These jumpers tell the computer which specific model it is controlling, and if they are missing or incorrectly positioned, the boiler shuts down for safety. It is most commonly caused by a vibrating component loosening the connection or following a recent repair where the circuit board was handled.

Typical repair cost £90-180 (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 – .20 fault code

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

Source

Baxi E.02 – .20 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