Originally Posted by neptronix 
Sounds like you got some bad emissions equipment. The rear oxygen sensor is supposed to monitor that. But it's either not connected, or *really really* broken.
That NO (PPM) reading is for nitrogen oxides.
You have REALLY high numbers. Usually resulting from something like a missing or malfunctioning EGR.
I suspect the previous owner tampered with the emissions equipment. How long have you owned this car?
I had the car for about a week and a half i think? The CEL was on to begin with, i scanned it and those 2 codes popped up for rear o2 sensor.
i deleted the code and tried to get it smogged anyways and got those results, everything passed besides the "NO PPM"
If it doesn't pass smog after the o2 sensor is replaced I guess I'm going to have a tough time figuring out whats wrong with it.
I just hope it passes after the sensor is replaced.
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