Pesky P2420 Evap System Fault


New member
I'm hoping someone can give me a direction to start in with an EVAP System fault on my 2016 Corolla Sport.  Only fault listed is P2420 Switching Valve Control Circuit High.  I've checked and reset the fault 3 times now and every time this fault comes back, as expected.  Any suspects that anyone might think of?


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