Hi all,

my second post,
in a friend's 98 Maxima the Check Engine has come on for a while.

Checked it and here are the codes: P0440 and P1448
was erased once and came back after a few days

codes mean
EVAP Small Leak and such




there are a few Nissan TSB's on this issue but I can't find more details, any help?!

where I shoudl start?1

 

http://forums.maxima.org/showthread.php?t=265311

0705 - P0440
0705
Diagnostic Trouble Code 0705 points to a problem with the Evaporative Emission Control System.

This malfunction is detected when the EVAP control system has a leak or the EVAP control system does not operate properly. (EVAP = EVAPorative emissions.)
Possible causes include...
- incorrect fuel tank vacuum relief valve
- incorrect fuel filler cap
- fuel filler cap vent remains open or fails to close
- foreign matter caught in fuel filler cap
- a leak in the line between the intake manifold and the
EVAP Canister Vacuum Control Valve
- foreign matter caught in the EVAP CVCV
- leaks in the EVAP canister or fuel tank
- leaks in the EVAP purge line (pipe and rubber tube)
- EVAP purge line rubber tube bent
- blocked or bent rubber tube to EVAP control system pressure sensor
- loose or disconnected rubber tube
- EVAP CVCV and circuit
- EVAP Canister Purge Volume Control Solenoid Valve and circuit
- absolute pressure sensor
- tank fuel temperature sensor
- MAP/BARO switch solenoid valve and circuit
- blocked or bent rubber tube to MAP/BARO switch solenoid valve
- O-ring of EVAP CVCV is missing or damaged
- water separator
- EVAP canister saturated with water
- EVAP control system pressure sensor
- refueling EVAP vapor cut valve
- ORVR system leaks


This is a "jackpot" DTC. It points to so many things you don't know what to check. It is often combined with another DTC which is more specific and therefore more helpful.


P1448 - 0309

 

can i ask you how u converted the P0440 to 0705 because my reader give me out the PXXXXX code and i cant relate it to any code....

 

to the best of my knowledge:
The second code with no P comes from the ECU itself.

you have to read it form the ecu,
there is the instruction as an sticky in this forum,

pretty easy

 

Kevlo,


thanks for the input,
as I said my other code is p1448, does that make anything clear?!?!


could you ellaborate a bit more?



Thanks
Amin

 

P1448 - 0309

i have no info on this code.

i converted ur code using haynes manual

if u can get some one to search for you, you might get info on code 0309