How much does it cost to fix Baxi error code E131?

Typical repair cost for the Baxi E131 fault is £120-250 including labour.

E131 High

Baxi E131 Fault Code

Q: What does the Baxi E131 fault code mean?

Your boiler experienced a power cut or electrical blip while it was already trying to deal with an existing system error, meaning it has now lost track of what triggered the fault.

The Baxi E131 fault code means: your boiler experienced a power cut or electrical blip while it was already trying to deal with an existing system error, meaning it has now lost track of what triggered the fault.. It appears on 1 Baxi model in our database.

Technical description: Interruption Of Power Supply while in fault mode

Typical repair cost £120-250 (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 E131 fault code

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

BBU 45/4 Repair: £120-250

Source

Baxi E131 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Baxi BBU 45/4 manual (PDF)

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026