Altima giving error code P2A00

kulacool · #1 (**permalink**) 07-17-2008, 05:04 AM

Hey Guys having a problem on my 08 altima coupe. Service engine light came on today, Getting code P2A00 with an actron CP9175

P2A00
02 Bank1 Sensor1
RANGE/PERFOMANCE

I do not have an aftermark intake or exhaust - but my wife did drive the car through high water, a few weeks back. It shut off the engine, but after a good cleanup - including flushing / drain the transmission fluid (w/ the pricey nissan cvt transmission fluid) , new air fliter & oil. It has been driving fine. Then today service engine light came on..

The o2 sensor was something that may have taken moisture but I figure since it's been running ok for a few weeks it survived. Could a good clean with Electronic Cleaner - do the trick? Can this light be tripped by anything else (like gas cap?) if the light is coming on does it mean the sensor is shot - or just acting faulty? Why would car be driving fine?

Thanks for any help!

Pics of the damage - there was water (flood water from heavy storms) pooled in the airintake case - O2 sensor sits right above here I think.

Could leftover dirt from the water be interfering w/ sensor - am unsure if the shop that did the work cleaned the filter box good....

Water was only this deep - car sat in for about 15mins then was pushed thru and towed away

Wife looking sad

Luckily the engine wasn't hydrolocked or anything else - the interior carpet did get soaked, the water pooled about an inch in the backseat floors.

QR · #2 (**permalink**) 07-17-2008, 05:16 AM

holy crap that sucks

TheRupp · #3 (**permalink**) 07-17-2008, 08:47 AM

I hope you don't have it pegged with a "FLOOD VEHICLE" title or electrical problems down the road...

I'm pretty sure that'll f*** up something and throw a code at that point.

velanzia · #4 (**permalink**) 07-17-2008, 01:52 PM

that sucks man. home come that much water went in? was it a huge pool?

(by the way nice road tho ..... but dangerous at night time with that pool)

kulacool · #5 (**permalink**) 07-17-2008, 05:01 PM

Bump - anyone seens this code before....

kamikazeH20mln · #6 (**permalink**) 07-17-2008, 05:36 PM

P2A00 - HO2S Circuit Closed Loop (CL) Performance Bank 1 Sensor 1 (PCM)

Hopefully it is not flood damaged. I would get a wet vac to get that water out of the air intake as the first step if you have not already and make sure everything is dried out in the air intake.

This is always why you don't drive through large pools of water :-P