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Greetings my friends,
I recently had a rough idle problem, no power; but thanks to the great information that I found here, I could get the code (P0300), and fix the problem myself, I replaced the 16 spark plugs, cleaned the PCV, changed the air filter, cleaned the trotlle, and applied sea foam. The car now looks fines, and runs a lot better, but I just got another code, P1129 and P0152, I did my reshearch and it looks like the oxygen sensor is bad, but I couldnt find details on where is it located and how to change it.
If I am correct or wrong could someone let me know?
Has anyone experienced that before?
My baby is a 300C AWD, 5.7 Hemi, and I just got 65K on on it.
I really apreciate all the help.
Thanks
 

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o2 sensors are misdiagnosed often. It is possible your o2 sensor is bad, or it is possible the catalyst in the convertor is not doing its job. Usually, only a professional shop can determine which is the case.

Personally, I would not want to replace 02 sensors and discover the convertor is bad, or replace the convertor and discover the o2 sensor was faulty.

I would have a technician determine which you need, especially since you have that P1129 manufacturer code showing.
 

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I too keep getting P0152 & P1129 on my 2017 Chrysler 300 C AWD 3.6 L V6. I reset it and codes come back in about a month. Car runs fine but it is a nuisance to have to keep resetting.
Is there any harm in keeping driving like this, or should I order a O2 sensor & replace it?
Please confirm that Bank 2 is on the driver's side.
Thanks,
Don
 
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