OBD2 Code Reader Accuracy

[LibertyFever]

My 04 Liberty is running fine with no visible error codes, no CEL indicator lit however when I connect my OBD2 code reader it seems to indicate a problem with the emissions system.

I tried a second code reader, an advanced model that my buddy has, and it even showed specific problems with the voltage levels on my Bank 2 sensors 1 & 2 O2 sensors.

So today I went to my dealership to have my O2 sensors checked out and maybe replaced but they couldn't find a single problem. What gives Are the code reader's that I'm using not as accurate as the dealership's?

 

[tjkj2002]

My 04 Liberty is running fine with no visible error codes, no CEL indicator lit however when I connect my OBD2 code reader it seems to indicate a problem with the emissions system.

I tried a second code reader, an advanced model that my buddy has, and it even showed specific problems with the voltage levels on my Bank 2 sensors 1 & 2 O2 sensors.

So today I went to my dealership to have my O2 sensors checked out and maybe replaced but they couldn't find a single problem. What gives Are the code reader's that I'm using not as accurate as the dealership's?

Unless you have a DRBIII then no,granted there are some scanners that will come close but they start at about $10,000.