well i keep throwing PO133-slow O2 sensor 1 response

i have replaced the 02 sensor with a bosch OE replacement and still there after clearing a dozen times

this all started after my ZZP install, and i have gone thru the diagnostic process and tried to ohm out the harnesses but no luck


any thoughts, can provide specific details if necessary

 

hope this helps ya out. if not your gonna have to take it to the dealer as there is a crap load of testing involved for this particular o2 sensor

Circuit Description
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The powertrain control module (PCM) supplies the HO2S with a reference, or bias, voltage of about 450 mV. When the engine is first started the PCM operates in open loop, ignoring the HO2S voltage signal. Once the HO2S reaches operating temperatures and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust stream.

This diagnostic will only run once per ignition cycle. The PCM monitors the rich-to-lean and lean-to-rich transition time. A transition is defined as the HO2S voltage changes from above 650 mV to below 450 mV or from below 450 mV to above 650 mV. If the PCM detects that the transition time is too long, DTC P0133 will set.

DTC Descriptor
This diagnostic procedure supports the following DTC:

DTC P0133 HO2S Slow Response Sensor 1

 

I say clean up the connections ,Use some contact cleaner.Spray them good and plug them in and out a few times and then let them dry apart.
Could be some corrosion.(cause of voltage drop)
also if any of the wire looks damaged (pinched etc.)replace or repair.A damaged wire can can cause a voltage drop and with millivolts this would be a big problem.

 

I'll be honest with you, you should put the AC Delco 02 sensor in it. I have had problems with aftermarket 02 sensors at my shop in the past. IF it still persists, then replace both 02 sensors. If the code still pops up, then the 02 sensors are not the issue. As strange as it may sound, I would move on to cleaning out the throttle body and MAF sensor too just to make sure those are causing a problem either. I know it doesn't make a whole lot of sense, but I have seen stranger things in my time.