2003 Jeep TJ owner here. I have had my jeep for over 20 years. Over the last 4 years I fought code 441 for small evap. I changed charcoal canister, evap solenoid, lines, etc. Essentially everything. No change. Two weeks ago, I bought new tires and went from my oversized 31" tires to the original factor spec tires. The engine code cleared and has not come back since. I've talked to a few mechanics who have all shrugged their shoulders on tire size solving things, but after years of fighting this code with no luck, I thought I'd share. Cheers-JM