trouble code: check engine light help
Thread Starter
I ♥ Acer
Joined: Jan 2007
Posts: 2,214
From: Laguna Hills, CA
trouble code: check engine light help
hey everyone after last night having a full car w/ pretty heavy people in my back seat area, i kinda scrapped my cats or mid pipe over a speedbump and on the ride back home i got a check engine light. so today i went over to autozone and checked it out w/ their OBD-II handheld and it gave me a code. wondering if anyone could tell me what it is and how to fix it? i already cleared it but still would like to fix it so it doesnt pop up again.
CODE : P1131
thanks,
Majeed
CODE : P1131
thanks,
Majeed
Gentleman's Relish
Joined: Feb 2005
Posts: 13,189
From: AZ
RE: trouble code: check engine light help
ORIGINAL: jEEd
hey everyone after last night having a full car w/ pretty heavy people in my back seat area, i kinda scrapped my cats or mid pipe over a speedbump and on the ride back home i got a check engine light. so today i went over to autozone and checked it out w/ their OBD-II handheld and it gave me a code. wondering if anyone could tell me what it is and how to fix it? i already cleared it but still would like to fix it so it doesnt pop up again.
CODE : P1131
thanks,
Majeed
hey everyone after last night having a full car w/ pretty heavy people in my back seat area, i kinda scrapped my cats or mid pipe over a speedbump and on the ride back home i got a check engine light. so today i went over to autozone and checked it out w/ their OBD-II handheld and it gave me a code. wondering if anyone could tell me what it is and how to fix it? i already cleared it but still would like to fix it so it doesnt pop up again.
CODE : P1131
thanks,
Majeed
P1131
Oxygen Sensor Lean A U
Probably crunched the rear 02
Thread Starter
I ♥ Acer
Joined: Jan 2007
Posts: 2,214
From: Laguna Hills, CA
RE: trouble code: check engine light help
oh thanks 
for some reason i didn't think you could google this stuff. hmm.
so would just replacing the 02 Sensors fix the problem & do cats go bad? so i can use it as an excuse to buy a new mid pipe
for some reason i didn't think you could google this stuff. hmm.so would just replacing the 02 Sensors fix the problem & do cats go bad? so i can use it as an excuse to buy a new mid pipe
4th Gear Member
Joined: Oct 2006
Posts: 1,460
From: Kentucky
RE: trouble code: check engine light help
p1131 is for the upstream(front o2 sensors only).vaccum leak,egr problem...overly lean condition.REAR o2 sensorhave nothing to do with A/F ratio....Upstream means front 02'sdownstream means rear o2's.
3rd Gear Member
Joined: Nov 2006
Posts: 641
From:
RE: trouble code: check engine light help
ORIGINAL: jEEd
oh alright thanks alot :] i'll have my dad order me some new sensors tomorrow ! thanks again everyone at MF
oh alright thanks alot :] i'll have my dad order me some new sensors tomorrow ! thanks again everyone at MF
4th Gear Member
Joined: Oct 2006
Posts: 1,460
From: Kentucky
RE: trouble code: check engine light help
ORIGINAL: LetThePoniesRunFree
Have you visually looked under the car to verify what damage occurred? Like others have stated, P1131 is an upstream O2 sensor or sensor related error. The upper O2's are tucked up pretty high and I doubt you damaged them by bottoming out. What has more than likely happened is when you bottomed out your exhaust you created a leak thereby throwing the P1131, (lean condition). If you cut an upstreamO2 wire, it will usually throw a P1127. I would take a look before ordering new parts. Just my .02
ORIGINAL: jEEd
oh alright thanks alot :] i'll have my dad order me some new sensors tomorrow ! thanks again everyone at MF
oh alright thanks alot :] i'll have my dad order me some new sensors tomorrow ! thanks again everyone at MF