01 Dakota CK engine light...

My 01 Dakota's ck engine light is coming on intermittently and gives out the code (going by memory here) P01601 (?).

It's the right rear oxygen sensor...

If it goes, it goes. right? Why intermittent? Thanks...

My 97's does that. It'll come on, then a week or so later, goes out. Truck runs the same either way. I had a 93 w/a bad O2 sensor, you'll know when it goes south.