How much does it cost to fix Vokera error code Check JP1?

Typical repair cost for the Vokera Check JP1 fault is £120-250 including labour.

Check JP1 High

Vokera Check JP1 Fault Code

Q: What does the Vokera Check JP1 fault code mean?

Your boiler has detected an internal configuration error, likely due to a loose link on the main computer board, which is preventing it from starting up correctly.

Also written as CHECKJP1 — same fault.

The Vokera Check JP1 fault code means: your boiler has detected an internal configuration error, likely due to a loose link on the main computer board, which is preventing it from starting up correctly.. It appears on 4 Vokera models in our database.

Technical description: Solid LED status (Yellow/Red)

Typical repair cost £120-250 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Vokera models that show the Check JP1 fault code

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

Source

Vokera Check JP1 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