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Discussion Starter · #1 ·
Prior was getting a P0456 error very small leak that I have been trying to diganose for 2 years- utilizing a smoke machine to scanner etc.
Recently replaced purge valve-old tested good-perhaps these hyundai OEM purge valves from amazon are junk. Now get a P0441 system incorrect purge flow.

See,s we have blockage?

I did run some Cataclean Fuel And Exhaust System Cleaner prior to getting the P0441

Have freeze frame data available.
Prior subsidary issue is 40-60 seems sluggish
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