FAIL POINT I / Sensor Fault High

Worcester Bosch FAIL POINT I / Sensor Fault Fault Code

Q: What does the Worcester Bosch FAIL POINT I / Sensor Fault fault code mean?

Your boiler has detected an internal communication problem with its sensors or electrical wiring, causing it to stop operating to ensure your safety.

Q: How much does it cost to fix Worcester Bosch error code FAIL POINT I / Sensor Fault?

Typical repair cost for the Worcester Bosch FAIL POINT I / Sensor Fault fault is £150-250 including labour.

Also written as FAILPOINTISENSORFAULT — same fault.

The Worcester Bosch FAIL POINT I / Sensor Fault fault code means: your boiler has detected an internal communication problem with its sensors or electrical wiring, causing it to stop operating to ensure your safety.. It appears on 2 Worcester Bosch models in our database.

Technical description: Flashing fast - DHW sensor, CH sensor, gas valve, or harness continuity fault

Typical repair cost £150-250 (including labour)

Engineer required

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

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Worcester Bosch models that show the FAIL POINT I / Sensor Fault fault code

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

Source

Worcester Bosch FAIL POINT I / Sensor Fault fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

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