Celica Forums General Discussion Engine and Performance Mass airflow sensor CEL. Black/Blue harness

Hi guys, I need help. I was wondering if anybody can help me about a week ago I bought a 2002 Toyota Celica GTS With a check engine light I went to AutoZone and they said it was the mass airflow sensor. so I changed it today. but when I was connecting it I saw that’s something was disconnected and the same harness. and I don’t know where it goes there one with a black tab and a blue tab and the check engine light is still on Thank you

Hey, welcome!

Photos would help, but otherwise I would begin by asking is it the stock air box or an aftermarket intake?

I have a stock intake