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Old 08-09-2019, 09:03 AM   #1
geaux_tigerss
 
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Drives: 2018 Summit White 2SS M6 Redline
Join Date: Nov 2011
Location: Orange, TX
Posts: 654
P015B - O2 Sensor Delayed Response after Headers

I keep getting P015B and a MIL after installing headers and tuning. Its bank 1 sensor 1 O2 sensor delayed response. Have any of you guys gotten this? If so, how have you dealt with it?

I don't have any drivability issues and no other codes. I haven't ruled out the O2 sensor being damaged during the header install. I thought I would ask here before dropping $100 on a new one if nothing is wrong with it. There's also the possibility that my old man put too much anti-seize on it during the install (few beers in at that point and wasn't watching him super close). I'm pretty sure I don't have an exhaust leak as I have inspected and retorqued everything twice since installation.

As far as tuning, I have messed with the airflow integrator delay and proportional band, but that hasn't helped at all. I'm pretty close to just disabling the code and calling it a day.

After typing this up, I realized I could swap bank 1 and 2 sensors and see if the error moves with it and confirm or rule out bad O2 sensor, so that will be my next step.

Thanks in advance for any help!
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2018 2SS Summit White M6, NPP, Redline
TSP 2" Headers, Rotofab
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Old 08-09-2019, 11:17 AM   #2
ssmofo
 
Drives: Chevy Camaro
Join Date: Jul 2019
Location: Dallas
Posts: 62
P015b Chevrolet Possible Causes
Faulty Heated Oxygen Bank 1 Sensor 1
Heated Oxygen Bank 1 Sensor 1 harness is open or shorted
Heated Oxygen Bank 1 Sensor 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks
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