How much does it cost to fix Vokera error code E 33?

Typical repair cost for the Vokera E 33 fault is £120-220 including labour.

E 33 High

Vokera E 33 Fault Code

Q: What does the Vokera E 33 fault code mean?

Your boiler has detected an electrical fault with one of its temperature sensors, meaning it cannot accurately read the heat levels and will stop working to keep you safe.

Also written as E33 — same fault.

The Vokera E 33 fault code means: your boiler has detected an electrical fault with one of its temperature sensors, meaning it cannot accurately read the heat levels and will stop working to keep you safe.. It appears on 1 Vokera model in our database.

Technical description: Short circuit on inlet sensor

What causes the Vokera E 33 fault?

This fault occurs when the electrical sensor responsible for measuring the temperature of water entering your boiler fails or suffers a short circuit. The most common reason is that the sensor's internal components have worn out over time, leading to an incorrect electrical signal that prevents the boiler from firing safely.

Typical repair cost £120-220 (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 E 33 fault code

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

Hydra Repair: £120-220

Source

Vokera E 33 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 27 April 2026