F0237 High

Worcester Bosch F0237 Fault Code

The Worcester Bosch F0237 fault code means: your boiler's computer has experienced a system failure and has entered a safety mode to prevent damage.. It appears on 1 Worcester Bosch model 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: Internal error

What causes the Worcester Bosch F0237 fault?

This fault occurs when the boiler's main control board suffers an internal electronic failure or loses proper communication with the internal wiring. It is often caused by a component failure on the circuit board itself or electrical interference that prevents the computer from executing its safety checks. Essentially, the boiler's 'brain' has detected a software or hardware glitch and has shut down to ensure it doesn't operate unsafely.

Typical repair cost £250-£550 (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 F0237 fault code

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

Source

Worcester Bosch F0237 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