High
E2 on Worcester Bosch Highflow 250

Your boiler has stopped working because it has lost the connection to the sensor that monitors its internal temperature, meaning it cannot safely regulate heat.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

T-sensor temperature sensor 1 interrupted

Engineer required

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

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Related fault codes

E5View →E9View →

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