Just wondering if anyone can give me some info. My mom's '96 Explorer set a Check Engine light this afternoon, and took it into Schuck's to pull codes. What I got was a code P0133 - O2 Sensor Circuit Slow Response (Bank 1 Sensor 1). Anyone else have this happen? Are there any other tests I should do before proceeding any further? Where is this particular sensor located? This truck has the 4.0 and an automatic. Any info would be appreciated.

Thanks
Jim

 

Jim, that's the passenger side sensor, nearest to the exhaust manifold. Someone suggested in another thread that removing the wheel well splash guard will make it easier to access.

Generally speaking, a slow response code indicates the O2 sensor is gettting 'lazy', and a new one will indeed solve the problem......