Ok, so the check engine light came on a couple days back on my 96 explorer 4.0L. It'* came on before but gone back off after a day. Not having an OBD II scanner in my posetion I swung by Sucks auto parts and borrowed one. Hooked it up and it told me code P0153: 02 Sensor circut slow response (Bank 2 Sensor 1) and that I have a pending code P0133.
Now, granted, the truck seems to run fine, but when the check engine light is on, it can be difficult to start it.
Do I just need to replace this sensor? Am I causing the truck harm by driving it?
The light has since gone back off and I'm not having any problems.