Downstream O2 Sensor questions
I ran a OBD Scan program from my netbook today and observed the following:
Can someone who knows how O2 sensors work explain which downstream sensor is working correctly, see the attached photo.
This photo shows the O2 sensors after the vehicle has been warmed up to normal operating temp. The downstream are the two on the bottom. Could this be causing a stutter or slight roughness in engine?
have the same problem?
Sunday, December 4th, 2011 AT 3:49 AM