How much does it cost to fix Johnson Starley error code DHW SENSOR LOCKOUT?

Typical repair cost for the Johnson Starley DHW SENSOR LOCKOUT fault is £90-180 including labour.

DHW SENSOR LOCKOUT High

Johnson Starley DHW SENSOR LOCKOUT Fault Code

Q: What does the Johnson Starley DHW SENSOR LOCKOUT fault code mean?

Your boiler has detected a problem with the sensor that monitors your hot water, so it has shut down that function to prevent overheating.

Also written as DHWSENSORLOCKOUT — same fault.

The Johnson Starley DHW SENSOR LOCKOUT fault code means: your boiler has detected a problem with the sensor that monitors your hot water, so it has shut down that function to prevent overheating.. It appears on 1 Johnson Starley model in our database.

Technical description: DHW sensor lockout

Typical repair cost £90-180 (including labour)

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 →

Johnson Starley models that show the DHW SENSOR LOCKOUT fault code

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

J32 System ET Repair: £90-180

Source

Johnson Starley DHW SENSOR LOCKOUT fault code information on this page is sourced and cross-checked against the official Johnson Starley service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026