Hello, my cousin is getting this code on his Accord:

P0441 - Evaporative Emission Control System Incorrect Purge Flow

He said that the code just appeared out of nowhere. Any suggestions on what he should check/start troubleshooting?

 

unless there is a break in the vacuum lines or the wiring going to the evap purge control solenoid valve, it probably has a bad evap purge control solenoid valve. also a dirty throttle body can cause this code to come on.