br400

Oxygen sensor readings while driving:

119,000 miles Replaced the mass air fuel sensor and seems to be driving better. It’s only been driven about 15 miles since the reset. Was having symptoms of a rough idle, weird latent and sometimes rough shifting, bad mpg, sometimes loud and smelly exhaust down. I made sure to reset transmission adaptive tables. Now Im not sure if I just never noticed but the oxygen sensor 1 is reading constant 0V at idle AND while driving. On the other end- oxygen sensor 2 was fixed at 0.86V while idling and 0.69V while driving. Is that normal? see log pics of oxygen sensor reading at idle below. No check engine light. any advice would be welcome. Thanks ER