E038 High

Vokera E038 Fault Code

The Vokera E038 fault code means: your boiler has detected that the gas is not burning correctly when running at full strength, so it has shut down for safety.. It appears on 3 Vokera models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: COMBUSTION CHECK FAILED HIGH POWER
Typical repair cost £120-£350 (including labour)

Engineer required

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

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Vokera models that show the E038 fault code

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

Source

Vokera E038 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.

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