BoilerFaultCodesVokera E16 Fault Code
The Vokera E16 fault code means: your boiler's main control board has encountered a software or electrical error and is unable to operate the system safely.. It appears on 2 Vokera models in our database.
Technical description: Internal fault (PCB)
What causes the Vokera E16 fault?
This fault occurs when the boiler's internal computer experiences a breakdown in communication or a hardware failure on its circuitry. The most common reason is electrical degradation of the components on the board over time, or a sudden power surge that has damaged the delicate microprocessors required to control the boiler safely.
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 →Vokera models that show the E16 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera E16 fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026