What would cause a '99 Toyota Camry engine light to stay on after you had replaced and oxygen sensor in Bank 1 sensor 1 location. Does it need an air flow sensor if it is a '99 Toyota camryV6?

Answer 1

if the code wasnt cleared by either disconnecting the battery or clearing it with a scan tool then it could take awhile. it will turn off eventually. if you just put a sensor in it without proper diagnosis, there is most likely a different problem that turned the light on in the first place, have the computer scanned and diagnose the problem before replacing parts. it will cost less in the long run. the v6 does have an airflow sensor. its called a "mass" airflow sensor. its located in the air cleaner box. (dont replace it unless properly diagnosed!)