Air Pressure Fault High

Worcester Bosch Air Pressure Fault Fault Code

Also written as AIRPRESSUREFAULT — same fault.

The Worcester Bosch Air Pressure Fault fault code means: your boiler is struggling to clear exhaust fumes or draw in fresh air, so it has safely shut down to prevent any risk.. 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: Fan operation; Air pressure switch C and NO terminals; Silicon tubes condition; Flue restrictions; Condensate drain.
Typical repair cost £150-300 (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 Air Pressure Fault fault code

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

Source

Worcester Bosch Air Pressure 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