1989 4Runner dlx, 22re,manual. New owner here and just did my first oil change. Noticed a single hanging wire that looks freshly knocked off. I'm assuming I did it when removed oil filter. New check engine light. Thanks for any insight!

C

 

Knock sensor. Up and left.

 

Sorry but, where?

 

Up and left of the oil filter. It is in the center of the photo I attached. Behind the banjo bolt for the fuel filter. It normally has a connector attached which clips onto the knock sensor.

 

Here, this might help

 

That was it! Thanks!!