P2A00 code, HELP

Kmccarthy714 · 06-05-2013, 07:09 AM

Quote:

Originally Posted by sixpax

I think he means he is going to swap them and retest to see if that confirms a bad or dirty MAF.

This exactly is what I did and I powered down all ECM components by removing and toucing battery positive and negative cable. All my reads look good as of roght now we will see after I drive 50miles or so

Kmccarthy714 · 06-05-2013, 07:11 AM

Quote:

Originally Posted by sixpax

I think he means he is going to swap them and retest to see if that confirms a bad or dirty MAF.

This exactly is what I did and I powered down all ECM components by removing and toucing battery positive and negative cable. All my readings look good as of right now we will see after I drive 50miles or so. Hopefully the problem moves to bank 2 and I can just clean the sensor

SouthArk370Z · 06-05-2013, 09:59 AM

Quote:

Originally Posted by Kmccarthy714

... I powered down all ECM components by removing and toucing battery positive and negative cable. ...

Not a good idea. It can cause surges/spikes in the system that can kill components. It's cumulative damage, so you can probably get away with doing it that way for a while, but it will eventually bite you.

Instead of shorting the terminals, use a fairly large resistor - 1-10 megohms and ~1 Watt (I'm not sure how much energy the system retains, so 0.25-0.5 W may be big enough). This will allow the system to discharge over a few seconds and avoid the spikes. You can avoid sparks around the battery by placing the resistor between any "always hot" point and ground.

Edit: Or, as others have mentioned, step on the brake. Much easier than using a resistor and accomplishes the same thing.

Chuck33079 · 06-05-2013, 10:03 AM

What's wrong with disconnecting the battery and holding the brake pedal for a bit?

cheshirecat · 06-05-2013, 10:11 AM

Quote:

Originally Posted by Chuck33079

What's wrong with disconnecting the battery and holding the brake pedal for a bit?

Nothing. This is what most people do to discharge the battery.

Kmccarthy714 · 06-06-2013, 07:19 PM

Ok well good and bad news. Code stayed off long enough for me to get it through inspection but came back today. My short term fuel trim for bank 2 is at 22percent my short term fuel trim for bank 1 is 3percent....MAF is reading 3.6g/s. Any ideas?

SS_Firehawk · 06-06-2013, 07:35 PM

I still think those mismatched sensors might be doing it. Expensive endeavor to replace though.

Kmccarthy714 · 06-06-2013, 09:38 PM

Quote:

Originally Posted by SS_Firehawk

I still think those mismatched sensors might be doing it. Expensive endeavor to replace though.

So you think go with a factory a/f sensor? I can return the Denso one w.o any problems.

SS_Firehawk · 06-06-2013, 10:08 PM

Quote:

Originally Posted by Kmccarthy714

So you think go with a factory a/f sensor? I can return the Denso one w.o any problems.

It would definitely be the route I would go. You can sometimes find oem ones cheap on ebay, look around first before ordering one at full price.

Kmccarthy714 · 06-07-2013, 11:03 AM

Do you know what brand O2 is stock?

SS_Firehawk · 06-07-2013, 12:48 PM

Quote:

Originally Posted by Kmccarthy714

Do you know what brand O2 is stock?

I just searched for an oem precat passenger or driver side of my model year. I was lucky as hell to find one on Ebay for like $50... Don't expect to find it that cheap though.

SS_Firehawk · 06-07-2013, 12:53 PM

Old thread showing a few places where to buy.

Where to get Oxygen sensors

Kmccarthy714 · 06-07-2013, 01:51 PM

Quote:

Originally Posted by SS_Firehawk

Old thread showing a few places where to buy.

Where to get Oxygen sensors

Ok, well that thread actually states that the stock sensor is a Denso. Which is what I put in. So I'm back to square one. Is there an AirFuel mixture relearn?

SS_Firehawk · 06-07-2013, 02:29 PM

Can't find a consistent part number to verify or manufacturer of the part. But this is from 3 companies selling new or used sensors and three drastically different price points :/ Not sure what to recommend or if your Denso is fine at this point.

OEM 2011+ VQ37VHR Front Oxygen (O2) Sensor

11 Nissan 370Z Exhaust Manifold Oxygen Sensor R18883

AIR FUEL RATIO SENSOR - 370Z (Z34) 2009+ :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

1st · 06-11-2013, 01:12 PM

Any updates? I want to go this set up but don’t want to deal with a cell. I have heard so many people with just Stillen G3’s and CBE and getting a cell. Per their website it also states on the G2 description No Check Engine Light (CEL) Problems. But on the G3 description states nothing about a cell which intern means they are aware it can cause a cell. Anyways bro you have already determined it’s not the 02 sensors. Did you end up cleaning the Maf sensors?

06-05-2013, 10:03 AM	#19 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	What's wrong with disconnecting the battery and holding the brake pedal for a bit? SouthArk370Z likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

06-06-2013, 07:35 PM	#22 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I still think those mismatched sensors might be doing it. Expensive endeavor to replace though. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

06-07-2013, 12:53 PM	#27 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	Old thread showing a few places where to buy. Where to get Oxygen sensors __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

06-07-2013, 02:29 PM	#29 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	Can't find a consistent part number to verify or manufacturer of the part. But this is from 3 companies selling new or used sensors and three drastically different price points :/ Not sure what to recommend or if your Denso is fine at this point. OEM 2011+ VQ37VHR Front Oxygen (O2) Sensor 11 Nissan 370Z Exhaust Manifold Oxygen Sensor R18883 AIR FUEL RATIO SENSOR - 370Z (Z34) 2009+ :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

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06-06-2013, 07:19 PM	#21 (permalink)
Kmccarthy714 Base Member Join Date: May 2013 Location: Orange County, NY Posts: 77 Drives: 09 Brilliant Silver Rep Power: 12	Ok well good and bad news. Code stayed off long enough for me to get it through inspection but came back today. My short term fuel trim for bank 2 is at 22percent my short term fuel trim for bank 1 is 3percent....MAF is reading 3.6g/s. Any ideas?

06-07-2013, 11:03 AM	#25 (permalink)
Kmccarthy714 Base Member Join Date: May 2013 Location: Orange County, NY Posts: 77 Drives: 09 Brilliant Silver Rep Power: 12	Do you know what brand O2 is stock?

06-11-2013, 01:12 PM	#30 (permalink)
1st A True Z Fanatic Join Date: Jul 2012 Location: I 80 Biz U.S. 50 Posts: 1,710 Drives: Platinum Z Rep Power: 1616	Any updates? I want to go this set up but don’t want to deal with a cell. I have heard so many people with just Stillen G3’s and CBE and getting a cell. Per their website it also states on the G2 description No Check Engine Light (CEL) Problems. But on the G3 description states nothing about a cell which intern means they are aware it can cause a cell. Anyways bro you have already determined it’s not the 02 sensors. Did you end up cleaning the Maf sensors?