p2a03 CEL code

inf3kted · 11-15-2015, 12:37 AM

Hi guys,

I'm getting a p2a03 CEL code. After some brief searching it might be a faulty sensor or a crack in my exhaust system somewhere. I have berk HFC and a tomei cat back.

Was wondering if anyone else has experienced this in their 370z.

DOOMMONKEY777 · 11-15-2015, 06:27 PM

Bad piping? Berk tech, i think some members had this prob.

Jack her up, n check for leaks. How long have u had it on?

Wait wait, its sensor #1 i just noticed, bad fuel....fuel pump could be goin, dirty intake filters, bad spark plugs.....this comes to mind.

inf3kted · 11-15-2015, 07:14 PM

Bank 2 are the sensors on the headers right?

I did try and clean my air flow meter with AFM spray less than a week ago...

Edit: found out im missing one of the bolts that connect the HFC to the Y-pipe. But it doesn't explain why the sensor on the headers are going off....

DOOMMONKEY777 · 11-15-2015, 10:03 PM

Quote:

Originally Posted by inf3kted

Bank 2 are the sensors on the headers right?

I did try and clean my air flow meter with AFM spray less than a week ago...

Edit: found out im missing one of the bolts that connect the HFC to the Y-pipe. But it doesn't explain why the sensor on the headers are going off....

Yes those are the ones that see a/f ratio right after the engine, get that bolt fixed, and clear the code, drive for 10-15 min, dont floor it, restart car and see if it comes back.

PongSanity · 11-17-2015, 09:26 AM

i get this plus p2a00 code. i gotta get up under the car and chk my HFCs. maybe my gaskets leaking... thats what my assumptions are. using vibrant 2.5 gaskets. ( f.i. HFCs , ARK CBE)

Wilson2608 · 11-24-2015, 09:06 PM

I had the same code. Turned out to be a Intake leaks for me.

inf3kted · 11-29-2015, 07:32 PM

Fixed the bolt issue and then cleared the code. Fast track to now the CEL has come on again. I would of thought it would of came on during my track day (which was after i cleared the CEL)

DOOMMONKEY777 · 11-30-2015, 03:16 PM

Quote:

Originally Posted by inf3kted

Fixed the bolt issue and then cleared the code. Fast track to now the CEL has come on again. I would of thought it would of came on during my track day (which was after i cleared the CEL)

Check the code, if its sensor #2 then ur fine its, because of berks u have, if its the same code on sensor 1, u got to look for the problem.

11-15-2015, 12:37 AM	#1 (permalink)
inf3kted Base Member Join Date: Aug 2013 Location: australia Posts: 60 Drives: 09 370z Rep Power: 12	p2a03 CEL code Hi guys, I'm getting a p2a03 CEL code. After some brief searching it might be a faulty sensor or a crack in my exhaust system somewhere. I have berk HFC and a tomei cat back. Was wondering if anyone else has experienced this in their 370z. Last edited by inf3kted; 11-15-2015 at 04:39 PM.

11-15-2015, 06:27 PM	#2 (permalink)
DOOMMONKEY777 A True Z Fanatic Join Date: Oct 2010 Location: Crooklyn Posts: 1,008 Drives: 370Z 6psd-sport-pkg Rep Power: 21	Bad piping? Berk tech, i think some members had this prob. Jack her up, n check for leaks. How long have u had it on? Wait wait, its sensor #1 i just noticed, bad fuel....fuel pump could be goin, dirty intake filters, bad spark plugs.....this comes to mind. __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane Last edited by DOOMMONKEY777; 11-15-2015 at 10:00 PM.

11-15-2015, 07:14 PM	#3 (permalink)
inf3kted Base Member Join Date: Aug 2013 Location: australia Posts: 60 Drives: 09 370z Rep Power: 12	Bank 2 are the sensors on the headers right? I did try and clean my air flow meter with AFM spray less than a week ago... Edit: found out im missing one of the bolts that connect the HFC to the Y-pipe. But it doesn't explain why the sensor on the headers are going off.... Last edited by inf3kted; 11-15-2015 at 09:48 PM.

11-24-2015, 09:06 PM	#6 (permalink)
Wilson2608 Enthusiast Member Join Date: Dec 2014 Location: Nashville Posts: 301 Drives: Nissan 370Z Sport Rep Power: 10	Hate this code I had the same code. Turned out to be a Intake leaks for me.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Code p200.a/f code help	YzGyz	Tuning	2	11-15-2015 10:11 PM
P0300 code - SES Light came on, got the code verified, now the light is off	kittens	Engine & Drivetrain	1	12-26-2013 07:02 PM
CEL code	xenogear81	Engine & Drivetrain	1	12-16-2013 04:03 PM
Need Help - OBD code	jpit	Nissan 370Z General Discussions	11	11-03-2009 07:44 PM
gas cap and cel(SES) code	tru_Asiatik	Engine & Drivetrain	7	07-09-2009 12:38 PM

11-17-2015, 09:26 AM	#5 (permalink)
PongSanity Enthusiast Member Join Date: Jul 2014 Location: Virgin Islands Posts: 261 Drives: '09 G37s KH3 6MT Rep Power: 11	i get this plus p2a00 code. i gotta get up under the car and chk my HFCs. maybe my gaskets leaking... thats what my assumptions are. using vibrant 2.5 gaskets. ( f.i. HFCs , ARK CBE)

11-29-2015, 07:32 PM	#7 (permalink)
inf3kted Base Member Join Date: Aug 2013 Location: australia Posts: 60 Drives: 09 370z Rep Power: 12	Fixed the bolt issue and then cleared the code. Fast track to now the CEL has come on again. I would of thought it would of came on during my track day (which was after i cleared the CEL)