I received an emissions warning and a P0012 code from my Verizon HUM that’s in my 2015 Toyota Sienna. What am I looking at here. The code says: A camshaft position - timing over-retarded ( bank 1)
You are looking at replacing the variable valve timing solenoid, or actuator, at best. A bit worse is you have oil sludge buildup in the system.
One you get this corrected, suggest to change the engine oil/filter more frequently. That part is used in the variable valve timing function, and is very sensitive to the engine oil.