Ok so I got a cel today...nothing major has been done recently except an oil change a 1000 miles ago.
1. Reset Ecu
2. Take to Autozone or wherever and figure out code of the CEL
3. Put back my butterfly valve which I took out like 8000 miles ago
4. Take to Toyota since my car is still under warranty
hhmmm im guessing no Intake
yet based on ur profile.. so I put the butterfly valve back, see if it makes it go away, then take it to autozone or Toyota since its under warranty...