P1448 ELC System 2 fault
&
P0440 PCM has determined that a malfunction exists in the evaporative emission control system.

The Max' rpm's geek out and stalls, daily. I've heard the Evap error can be as little as the gas cap, but assume it could be worse too.

 

Stil nothing, eh? Nobody in this section has a clue what these failure's mean. I bet if I asked a "how to" on blinging out my wife's Maxima I'd get 100 replies.

 

I've never heard of the crap going on with your car. You have a lemon

 

Yes it often feels like the stupid "I have a spare $1000" get heaps of replies and the more techy ones don't

Anyhoo..

Buy a haynes manual (Amazon.com), seriously. It covers everything in very high detail.. it will tell you how to diagnose faults with your EVAP system etc.. tells you where to clean out.. what voltages should be what etc

You'll need to resolve "P1448 ELC System 2 fault " first and the 2nd code will disappear most likely .. the haynes will tell you where to look when you get that code (if I had mine with me I'd give you some pointers)

 

For a P1448, the book sez...

If both DTC P0440 or P1440 and P1448 are displayed, perform
TROUBLE DIAGNOSIS FOR DTC P1448 first.

The EVAP canister vent control valve is located on the EVAP canister
and is used to seal the canister vent.

This solenoid (the EVAP canister vent control valve) responds to
signals from the ECM.

When the ECM sends an ON signal, the coil in the solenoid valve
is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.

When the vent is closed, under normal purge conditions, the
evaporative emission control system is depressurized and allows
“EVAP Control System (Small Leak)” diagnosis.


Malfunction hits when...
EVAP canister vent control valve remains opened
under specified driving conditions.


So... check this stuff...

EVAP canister vent control valve
EVAP control system pressure sensor
Blocked rubber tube to EVAP canister vent control valve
Water separator
EVAP canister is saturated with water.
Vacuum cut valve


HTH
Steve

 

nfafan & killerVQ30DE, thank you very much, I appreciate the time you put into your post's to give me a hand. A thumbsup to both of you.

The other guy, yeah, your obviously one of the guys I was talking about.

 

no worries.. and as you can see above .. the Haynes manual ROCKS!

 

Oh yeah, you got that right. This section is 90%

We have daily arguments about how dark to tint the windows, whether or not to
get 18s or 19s, underdrive pullys, and all kinds of "performance mods" the result in 3 horesepower.