How much does it cost to fix Vaillant error code D.094?

Cost varies. Contact a Gas Safe registered engineer for a quote.

D.094 Low

Vaillant D.094 Fault Code

Q: What does the Vaillant D.094 fault code mean?

Your boiler's internal memory of past errors has been successfully wiped, which is a housekeeping task rather than a sign of a new fault.

Also written as D094 — same fault.

The Vaillant D.094 fault code means: your boiler's internal memory of past errors has been successfully wiped, which is a housekeeping task rather than a sign of a new fault.. It appears on 6 Vaillant models in our database.

Technical description: Delete the entire fault list

Engineer required

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

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Vaillant models that show the D.094 fault code

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

ecoFIT pure
ecoFIT Pure 418
ecoFIT Pure 425
ecoFIT Pure 435
ecoFIT Pure 830
ecoFIT Pure 835

Source

Vaillant D.094 fault code information on this page is sourced and cross-checked against the official Vaillant service / installation manuals for each affected model.

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