Agreed with the people who said look at the wiring - the P0446 is for the canister vent solenoid *circuit*. it's not the purge valve, and it's the electronics having an issue. Mine was eaten, thus shorted and corroded off - look under drivers door at the wiring going into the vent solenoid...
My '13 (with 80k miles) did this this morning. Was just the 20A fuse, but you can see how it burned out the side of it - new fuse got me going, however i'm going to relocate the fuse since the fuse block is clearly heating up (per that TSB)
Thanks @Dalamar !!!
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