E.00 .16 Medium

Baxi E.00 .16 Fault Code

Also written as E0016 — same fault.

The Baxi E.00 .16 fault code means: your boiler has lost the connection to the temperature sensor in your hot water cylinder, meaning it cannot tell how hot your stored water is.. It appears on 7 Baxi models in our database.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description: DHW tank temperature sensor not connected SENSOR OPEN Check the operation of the sensor Check the sensor/PCB connection When removing a domestic hot water tank, set parameter DP150=1
Typical repair cost £120-220 (including labour)

Engineer required

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

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Baxi models that show the E.00 .16 fault code

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

Source

Baxi E.00 .16 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026