What happens if i dont change Code P0496?

Question

Evaporative Emissions system purge control valve

Answer 1

P0496 Evaporative flow during a non purge flow

Being a small engine you may experience a slight rough idle, This is a solenoid , solenoid are capable of shorting its ECM driver, So if in the future when you are forced to repair in order to register the vehicle  you may need to replace the ECM with the purge valve