ticko

Last night my SES light came on. Today i got the code pulled.

Code: P0420

This is the information they gave me...

The PCK has determined that the catalyst system efficiency for bank 1 is below threshold for the current engine operating conditions. (bank 1 dentifies the location of cylinder #1, while bank 2 dentifies the cylinders on the opposite bank)

Does anyone have any idea what this means?

sloppymax

iTrader: (8)

here the TSB off of studman's website. the code is typically cleared up by a flash done only by nissan consult 2. this is a diagnostic tool that the nissan/infiniti dealers use. this is covered 8yr/80k as mandated under a federally mandated emissions warranty. there have been a few instances where the code would repeat after the flash and a replacement of the main cat was in order.

ticko

Ok, so im reading about this code at other places and said we have warrenty. I have 93K on my car does it still fall in the warrenty?

Also, i am understanding this is not a bad cat. its the o2 senser. How can i get this fixed and the code to not pull anymore?

killer924007

93k...it's out of warranty already!!!!

ticko

****... well what does this code mean?

ManualMaxima

iTrader: (10)

hahaha...i am sitting in the nissan dealership right now getting this checked out on my 2001. They said it is probely the cat converted and if you are below 80,000 miles they will slap a new one on for free, and not charge me for the CEL dignosis.

ticko

thanks for asking, is it ok to drive like this for a little bit?

CCS2k1Max

iTrader: (2)

I got that code at 56K miles (about 4800 miles back, the stealer wanted $95 just to diagnose. *******). I and reset the ECU and it hasn't come back. At 93K miles it may be the real deal, but it may not hurt to reset the ECU and if it comes back that's your answer. My car didn't feel any different with that code.

Lontar1

iTrader: (5)

on my car it comes and go..... I just got used to it.... no problems driving yet....

CCS2k1Max

iTrader: (2)

If you don't have to go through emissions testing, you should be okay.

(I hope I didn't jinx myself on this one as I got the emissions checkup notice yesterday in the mail)

ticko

haha the good thing is i got my emmission test like 3 weeks ago

how do you reset the ECU for a 2001? i looked on the how tos and it only says for 2002-2003...

CCS2k1Max

iTrader: (2)

Unplug the negative terminal off the battery. Some people say to step on the brake pedal to make sure you drain any juice out of the system. I did that and left it unplugged overnight. You'll lose all the radio settings and trip odo readings, no biggie.

ticko

ok thanks you!

ticko

so if i do have the real problem, how long could i drive my car with it until it starts messing up?

CCS2k1Max

iTrader: (2)

Couple of weeks to a couple of months. Hard to tell

E55AMG2

iTrader: (4)

there have been about 40,502,687,345,602 threads on this subject. Search please. Next one to post the same topic again gets a 1 day.

-E55AMG2