Emergency
Incorrect CO2 on Worcester Bosch Utility

Your boiler is struggling to mix the right amount of air with its fuel to burn cleanly, which means it may not operate safely or efficiently.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Air adjustment fault; Oil pressure incorrect

From this model's manual
Verified against the Worcester Bosch Greenstar Camray Utility installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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