PO15B - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JB'sZL1 · 09-09-2017, 04:30 PM

Just had my engine light come on. PO15B code. The only mod is a CAI installed 5K miles ago...been running fine with no code until today.

So apparently the code means running lean (O2 sensor, B1S1).

Think it's safe to clear the code and run until I do more mods late this fall?

JB'sZL1 · 09-09-2017, 05:15 PM

I don't know if this is enough to cause the code: I just found two small leaks, one on each of the bottom forward edge of the mufflers. The soot is about 4" in diameter.

ABADZL1 · 09-10-2017, 10:19 AM

Do you have headers? If so your tuner should have disabled all of the slow response DTC's. Not caused by the muffler drain holes. If you don't have headers, Could be the left front O2 sensor going bad

JB'sZL1 · 09-10-2017, 10:28 AM

I have them, but not yet installed (having them ceramic coated).

Do you think it be the cai (CAI)? That's been installed for 5 months...no issues until yesterday.

I will check the O2. Thanks!

ABADZL1 · 09-10-2017, 10:30 AM

No. Replace the sensor

JB'sZL1 · 09-10-2017, 12:21 PM

Thanks ABAD!

Stephen12ZL1 · 09-12-2017, 09:12 AM

replace the sensor when you install the headers. You will still need a tune to get this code removed by your tuner.

JB'sZL1 · 09-12-2017, 10:33 AM

Quote:

Originally Posted by Stephen12ZL1

replace the sensor when you install the headers. You will still need a tune to get this code removed by your tuner.

Well...I cleared the code Sunday with my scan tool. Have put 130 miles on it since and no more code. I will get the sensor regardless.

silversleeper · 09-12-2017, 11:11 AM

To repeat what they said, and add info about tuning if I understand it;
The tune will remove the rear sensors from being considered. They are there to check the operation of the cats. If you keep the cats the sensors might not be adjusted in the tune. With no cats the rear sensors will throw a code error. The front sensors would be wanted to keep the closed loop tune operational. To adjust the rich / lean based on temperatures and altitude and your mods. The front sensors are important. If you have them in error now, besides poor running or bad mpg you could overheat and ruin your cat. I wouldn't really let that go too long myself if you have cats.

JB'sZL1 · 09-12-2017, 11:18 AM

The only mod I've made is CAI (and SC tank). I didn't think that would throw a code.

I have headers and will have a tune when those are installed (with some other mods).

I understood that the sensor might be bad...or the connection or wiring. Not that I have altered the mix that much by adding a CAI. Or am I wrong in that (that a CAI will throw a code)?

I understand what you are stating though: if it's a bad sensor...replace it.

Stephen12ZL1 · 09-13-2017, 06:50 AM

Quote:

Originally Posted by JB'sZL1

Well...I cleared the code Sunday with my scan tool. Have put 130 miles on it since and no more code. I will get the sensor regardless.

Good deal...I wouldn't worry much about the code until all of your mods are installed. Cruising around won't cause any problems with just that code.

JB'sZL1 · 09-13-2017, 07:09 AM

Quote:

Originally Posted by Stephen12ZL1

Good deal...I wouldn't worry much about the code until all of your mods are installed. Cruising around won't cause any problems with just that code.

Thanks. The code has remain cleared, but I will remain vigilant.

09-09-2017, 04:30 PM	#1
JB'sZL1 Drives: 2013 ZL1 and 2019 Ram Laramie Join Date: May 2017 Location: Milwaukee Posts: 1,259	PO15B Just had my engine light come on. PO15B code. The only mod is a CAI installed 5K miles ago...been running fine with no code until today. So apparently the code means running lean (O2 sensor, B1S1). Think it's safe to clear the code and run until I do more mods late this fall?

09-10-2017, 10:19 AM	#3
ABADZL1 ZL1 Pilot Drives: 2013 ZL1 Join Date: Apr 2014 Location: TN Posts: 1,670 View My Garage	Do you have headers? If so your tuner should have disabled all of the slow response DTC's. Not caused by the muffler drain holes. If you don't have headers, Could be the left front O2 sensor going bad __________________ GP Tuning 2.5 Cam, RPS Carbon Twin Clutch, Ported Blower, Kook's Headers, Cold Air Inductions CAI, ID850's, 9.17 Lower, 2.5 Upper, JMS BAP, Pedders Front Radius Arm Inserts, Whiteline Subframe Inserts, Tuned by me with HP Tuners Idle Clip Link...........https://www.youtube.com/watch?v=gTL8S9eHwbs

09-10-2017, 10:30 AM	#5
ABADZL1 ZL1 Pilot Drives: 2013 ZL1 Join Date: Apr 2014 Location: TN Posts: 1,670 View My Garage	No. Replace the sensor __________________ GP Tuning 2.5 Cam, RPS Carbon Twin Clutch, Ported Blower, Kook's Headers, Cold Air Inductions CAI, ID850's, 9.17 Lower, 2.5 Upper, JMS BAP, Pedders Front Radius Arm Inserts, Whiteline Subframe Inserts, Tuned by me with HP Tuners Idle Clip Link...........https://www.youtube.com/watch?v=gTL8S9eHwbs

09-12-2017, 09:12 AM	#7
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,808	replace the sensor when you install the headers. You will still need a tune to get this code removed by your tuner. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

09-09-2017, 05:15 PM	#2
JB'sZL1 Drives: 2013 ZL1 and 2019 Ram Laramie Join Date: May 2017 Location: Milwaukee Posts: 1,259	I don't know if this is enough to cause the code: I just found two small leaks, one on each of the bottom forward edge of the mufflers. The soot is about 4" in diameter.

09-10-2017, 10:28 AM	#4
JB'sZL1 Drives: 2013 ZL1 and 2019 Ram Laramie Join Date: May 2017 Location: Milwaukee Posts: 1,259	I have them, but not yet installed (having them ceramic coated). Do you think it be the cai (CAI)? That's been installed for 5 months...no issues until yesterday. I will check the O2. Thanks!

09-10-2017, 12:21 PM	#6
JB'sZL1 Drives: 2013 ZL1 and 2019 Ram Laramie Join Date: May 2017 Location: Milwaukee Posts: 1,259	Thanks ABAD!

09-12-2017, 11:11 AM	#9
silversleeper Big Crow Drives: '13 ZL1 Join Date: Mar 2017 Location: California Posts: 1,483	To repeat what they said, and add info about tuning if I understand it; The tune will remove the rear sensors from being considered. They are there to check the operation of the cats. If you keep the cats the sensors might not be adjusted in the tune. With no cats the rear sensors will throw a code error. The front sensors would be wanted to keep the closed loop tune operational. To adjust the rich / lean based on temperatures and altitude and your mods. The front sensors are important. If you have them in error now, besides poor running or bad mpg you could overheat and ruin your cat. I wouldn't really let that go too long myself if you have cats.

09-12-2017, 11:18 AM	#10
JB'sZL1 Drives: 2013 ZL1 and 2019 Ram Laramie Join Date: May 2017 Location: Milwaukee Posts: 1,259	The only mod I've made is CAI (and SC tank). I didn't think that would throw a code. I have headers and will have a tune when those are installed (with some other mods). I understood that the sensor might be bad...or the connection or wiring. Not that I have altered the mix that much by adding a CAI. Or am I wrong in that (that a CAI will throw a code)? I understand what you are stating though: if it's a bad sensor...replace it.