BoilerFaultCodesBaxi E163 Fault Code
The Baxi E163 fault code means: your boiler has detected a problem with the sensor that monitors hot water temperature, meaning you likely have no hot water or the temperature is inconsistent.. It appears on 23 Baxi models in our database.
Technical description: Domestic hot water (DHW) negative temperature coefficient (NTC) thermostat sensor fault (s.c.) or DHW NTC sensor fault (o.c.).
What causes the Baxi E163 fault?
This fault occurs when the sensor responsible for measuring the temperature of your hot water fails or sends an unreadable signal to the main control board. The most common reason is that the internal components of the sensor have worn out over time, or the electrical connection between the sensor and the boiler has become damaged or loose.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Baxi models that show the E163 fault code
Click a model for the full fault code list and model-specific repair notes.
- 400 Combi (range) Repair: £90-160
- 600 Combi (range) Repair: £90-160
- 800 Repair: £90-160
- 80e Repair: £90-160
- Assure Repair: £90-160
- Bermuda Repair: £90-160
- Eco Compact Repair: £90-160
- Eco Elite Repair: £90-160
- EP Repair: £90-160
- Netaheat Repair: £90-160
- Performa Repair: £90-160
- Profile Repair: £90-160
- Profile Prima Repair: £90-160
- Statesman Repair: £90-160
- Suprima 100 Repair: £90-160
- Suprima 115 Repair: £95-170
- Suprima 30 Repair: £90-160
- Suprima 40 Repair: £90-160
- Suprima 50 Repair: £90-160
- Suprima 60 Repair: £90-160
- Suprima 70 Repair: £95-£160
- Suprima 80 Repair: £90-160
- Titanium Repair: £90-160
Source
Baxi E163 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 27 April 2026