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03/12/2020 11:03 am
Topic starter
Hi Scotty
I got a check engine light come on my 2015 Cadillac ATS 2L Turbo yesterday. With my Blue Driver OBDII scan tool I was able to read and confirm it was P015B code (O2 sensor delayed response Lean to Rich Bank 1 Sensor 1). I cleared the code and it hasn't come as of this morning. Do I need to replace the O2 sensor even though the check engine hasn't come back on or wait and see if does and then replace it?
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05/12/2020 7:39 pm
Well you just be guessing off of this not the sensor but something with the engine that it's either running to Rich or too late maybe if it runs okay I just ignore it realize those things become electrical nightmares as they age