Max_Vader_2K

after a p0420 and a p1320 code at the same time the light went out. But no work was done to the car. no reflash or nothing. ? ? ? ? Is the car well again or are the codes stored for later. again the car is running fine. need a tune up tho.

00MAXI

Have you already replaced your Coils?

Max_Vader_2K

Nope. I have not did a thing but you can for get that post because the light is back on. an I still have not touched the car. I think its the TB restrictor being removed.

Lontar1

iTrader: (5)

I got the same code once P0420, well every day.... It comes and go when it wants...so I just don't care anymore. I found interesting that when I overtight the gas cap the SES goes away. HUMMM makes me think about changing the gas cap!!!!

00GLE

In my Maxima manual it states that the SES light turns off after a certain number of key-ons if it isn't reset. (I believe it's 20). I have the P0420 code as well, and mine turned off after a while.

I don't think the code is automatically cleared though, I think that it still remains in the memory, but the SES doesn't come on.

2MuchMAX4U

iTrader: (7)

I have had/have the P0420 for about a year finally gonna take it to the dealer and get it fixed! My light has gone off twice and has come back on in a few days. Extreme cold/hot seemed to have an effect on it....

ZIPPIN

iTrader: (32)

don't you worry bubba. it will come back. mine did the same thing.