Luckily it's not a big deal, at least it hasn't been in our case. Went on at 1k miles, cleared it, came back on 500 miles later (IIRC) dealer cleared it and ordered the valve, light didn't come back on for another 2k miles, I cleared it and since our nearest dealer is 200 miles away I didn't have it replaced as of now, light was off for 6k miles and came back on a couple times but went back off. Hasn't been back on for another 2k miles. There's never any difference in the drive, performance, or mpg when the light was on, it's just annoying for the most part

I think I'll just wait until the part is available for the $20 range and just change it out, it's a 5 minute job, max!