DTC P0154 "Insufficient Activity Bank2 Sensor1"

[dochidalgo]

Ok, thanks to Fred, the initial DTC P0300 (cylinder 4, the source) was fixed with new fuel injectors (Racetronix Delphi/Lucas 24 lbs). Now, the engine shows that particular DTC. The both precats O2 sensors are new AC Delco's, installed BEFORE the engine showed the P0300 (Random misfiring).
I know when the Check Engine is going to light because the car does not accelerate when I push the gas pedal for a seconds, then it seems I relief the brake...the car accelerate just fine.

Bad connector? Another cause to rule out?

Thanks a lot in advance for your imput
Dochidalgo

[Kevin - Blown 95 TA]

A little bit of work, but you can put the sensor to the other side and see if the code follows it.