Engine light on.
Codes indicate something about catalytic.
Replaced downstream O2 sensors with Bosch.
Code came back.
O2 sensor 1 voltage 0.15 V
O2 sensor 1 Short Term fuel trim: -2.34% (is this normal at idle (1197RPM)?)
O2 sensor 2 voltage 0.1 V
O2 sensor 5 voltage 0.88 V (where is this one...