P0031 Problem

knemeth · 01-13-2008, 10:58 PM

Hey all,
I've recently thrown a P0031 CEL. This, of course, would indicate that my front O2 sensor is bad, if I'm not mistaken. However, I just replaced that front o2 sensor ~3weeks ago. I was previously throwing a P0139 (i think) when the first one went bad. I have a Invidia TBE, Invidia equal length header w/ uppipe, APS CAI, Perrin lightened crank pulley, NGK one-step-colder plugs, and the Accessport (I'm running the stage 2 93oct HWG map right now). After i replaced the first o2 sensor with another OEM model, things returned to perfect. The idle surging was gone and the car was running perfectly. Unfortunately, as I mentioned, that only last 3 weeks. Now I'm throwing a P0031 CEL. I've seen that switching to a wideband o2 sensor MIGHT be helpful, but that seems to only sometimes be the case. I've also seen that going back to the normal temp NGK plugs might cure the problem. Any suggestions as to what I can do? Replacing that damn o2 every couple of weeks just won't be economical, ya know? haha
Kev
Indianapolis, IN

gosu · 01-16-2008, 08:31 AM

p0031 is heated 02 sensor control circuit low

I can PM you a .pdf of diagnostic steps to track your gremlin if you want

knemeth · 01-18-2008, 12:11 AM

if you could do that, that would be kick ass
thanks!

**EvO KiLLeR 2005** · 02-10-2008, 12:54 PM

i pulled the same code would you be able to help me out too? thank you .

gosu · 02-10-2008, 06:31 PM

Quote:

Originally Posted by knemeth

if you could do that, that would be kick ass
thanks!

still need it?

Quote:

Originally Posted by EvO KiLLeR 2005

i pulled the same code would you be able to help me out too? thank you .

pm me your email

01-13-2008, 10:58 PM	#1
knemeth Lurker Posts: 7 Join Date: Dec 2005 Trader Rating: (0)	P0031 Problem Hey all, I've recently thrown a P0031 CEL. This, of course, would indicate that my front O2 sensor is bad, if I'm not mistaken. However, I just replaced that front o2 sensor ~3weeks ago. I was previously throwing a P0139 (i think) when the first one went bad. I have a Invidia TBE, Invidia equal length header w/ uppipe, APS CAI, Perrin lightened crank pulley, NGK one-step-colder plugs, and the Accessport (I'm running the stage 2 93oct HWG map right now). After i replaced the first o2 sensor with another OEM model, things returned to perfect. The idle surging was gone and the car was running perfectly. Unfortunately, as I mentioned, that only last 3 weeks. Now I'm throwing a P0031 CEL. I've seen that switching to a wideband o2 sensor MIGHT be helpful, but that seems to only sometimes be the case. I've also seen that going back to the normal temp NGK plugs might cure the problem. Any suggestions as to what I can do? Replacing that damn o2 every couple of weeks just won't be economical, ya know? haha Kev Indianapolis, IN This ad is not endorsed by this member. Please register or login to hide this ad.

01-16-2008, 08:31 AM	#2
gosu STI Driver Car: 07 WRX STi Fav Mod: Tires and Brakes! Location: AZ Posts: 200 Join Date: Dec 2005 Trader Rating: (1)	Re: P0031 Problem p0031 is heated 02 sensor control circuit low I can PM you a .pdf of diagnostic steps to track your gremlin if you want Last edited by gosu : 02-10-2008 at 10:38 PM.

01-18-2008, 12:11 AM	#3
knemeth Lurker Posts: 7 Join Date: Dec 2005 Trader Rating: (0)	Re: P0031 Problem if you could do that, that would be kick ass thanks!

02-10-2008, 12:54 PM	#4
EvO KiLLeR 2005 Gold Member Car: 05 OBP STI Fav Mod: STG 2 Location: San Diego Posts: 113 Join Date: Feb 2008 Trader Rating: (2)	Re: P0031 Problem i pulled the same code would you be able to help me out too? thank you .