Cutoff valve - on top of the tank, you have to drop the tank to get at the valve. Total PITA to get to.
Yeah, I'm used to the old EVAP systems - big charcoal canister with fuel vapor going into on line, vent to atmosphere on the other, and purge line running to the carburetor.
You can reset the ECM and see if the codes come back. If no new codes are triggered, the CEL will eventually turn off, as these are non-critical engine codes. But note that the codes are still stored in memory.
When I first starting noticing problems, I would get a strong gasoline odor around the driver's side passenger door, immediately after filling the tank or after getting out of the car after I filled up the night before or that morning.
No - these codes should not affect fuel economy.
Yup - that is the EVAP test port - that is what you use to smoke test the system.
Technically, three Toyotas right now, one back home - but all 4 are being used on a regular basis.
Grew up only on domestic (GM, Mopar, FoMoCo), as my dad worked for a union job in midwest US. If you drove an import, they would vandalize it every chance they got. He used to drive a 1971 BMW 2002 - but got tired of the guys constantly putting it on blocks, slashing his tires, turning it on its side. That was until a big snowstorm hit - he was the only one to drive people home, everyone else got stuck. Given that BMW's superior handling and perfect balance, just the right amount of power and a huge trunk - it was an awesome car. Unfortunately, costs a small fortune to upkeep. We junked that one, but later picked up a near identical one for collecting purposes.
I also dabbled with Hondas in the past, but they were never a mainstay for me - too finicky with maintenance, but were robust enough to mod - my first import engine swap/forced induction project. But with our first primary Japanese car was a 1996 Camry - the money we saved in just maintenance and gas from not driving the car it replaced for one year, completely paid for the Camry on year two. The Camry, we still have - 385K miles, still running well. Recently replaced a number of parts - but pretty much the first 10 years, we changed only wear parts only - nothing broke on the car, never stranded me anywhere, delivered awesome gas mileage and ride. Unfortunately, probably can't say the same for the newer Toyotas. Still better than others, but they don't make them like they used to. After that Camry experience - it was all Toyota, haven't had a reason to stray yet.
Right now - I currently have a 2002 Corolla, 2009 Matrix, and 2009 Rav4 in front of my house. We still have the Camry, but now driven by my brother. The Matrix and Rav4 are our primary ones, still drive the Corolla from time to time. Not as much, as I wanted it to slow down the miles - plan on giving the Corolla to my son as a first time car.