I have a1998 Altima. The service engine light came on. Had it diagnosed and received error codes P0440 and P1448. What are these and are they easy to fix?

Asked by Jan 19, 2013 at 11:47 AM about the 1998 Nissan Altima GLE

Question type: Maintenance & Repair

2 Answers

6,515

The P0440 code indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. The P1448 code indicates that the EVAP Canister Vent Control Valve is open. The EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent. This solenoid 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

4 out of 4 people think this is helpful.
455

Good call on both the codes. I've seen P0440 a fair amount...a very general code something is wrong in the emission system. And I think the last time my '01 Frontier threw a service engine code it was for an open vent or valve somewhere in the emission system (not the engine). I think it might have been on the charcoal canister. I've heard on some Nissans, vents in the emissions system will stick open sometimes. That's what happened on mine. I reset the code (for what it's worth, I also unscrewed and re-tightened the gas cap) and drove it a while. The light has never come back on. If these are the only two codes, I don't think it would hurt to have someone reset them for you and drive it a while to see if they come back on (it's likely they're both for the same issue). If it doesn't you're fine. If it does, you'll have to replace something in the emission system (not certain what, though prob not the expensive catalytic converter). But it you want to reset the code and run the vehicle, it shouldn't hurt anything.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Service Engine Light 2 answers

    I just got a used 2007 Altima. The service engine light is on again. We just had both catalytic converters changed, oil change, and there was a vacuum hose replaced. Now the light has come on agai...

    2007 Nissan Altima 2.5 S

    -

    Maintenance & Repair

  • 1999 Altima Codes - Can one repair fix all 3 codes? 2 answers

    My Service Engine Light came in my 1999 Altima on so I had a diagnostic tool give me codes. It produced 3 codes. 1) P0325 "Knock Sensor Problem (Bank #1). 2) P0420 "Catalyst Problem (Bank #1), 3) P014...

    1999 Nissan Altima

    -

    Maintenance & Repair

  • Nissan Altima throws code P 505 2 answers

    98 Altima had total engine rebuilt. Head was warped, machined smoothed, runs great. Now engine light on, throws code P 505 and needs Ca. smog cert. Tech said it will be about $400.00. He let me kn...

    1998 Nissan Altima GXE

    -

    Maintenance & Repair

  • 1997 Altima EXE Limited Edition eng light 2 answers

    Yes it is an EXE. The engine light is on but when it first came on it went off then returned months later. We replaced plugs, plug wires and distributor cap. Still the light is on. I took to Autozone ...

    1997 Nissan Altima GXE (1997.5)

    -

    Maintenance & Repair

  • Reset Check engine light after service 26 answers

    How do I reset the check engine light now that I have completed the service.

    2001 Nissan Frontier 2 Dr XE Extended Cab SB

    -

    Maintenance & Repair

Search Nissan Altima Questions

Nissan Altima Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,000
#2 Cassie Sapphire
Cassie Sapphire
Reputation 650
#3 putolile
putolile
Reputation 620
View All

Related Models For Sale

Used Nissan Maxima
290 Great Deals out of 26,473 listings starting at $1,300
Used Honda Accord
789 Great Deals out of 88,192 listings starting at $1,150
Used Toyota Camry
854 Great Deals out of 90,973 listings starting at $249
Used Honda Civic
516 Great Deals out of 89,847 listings starting at $1,299
Used Nissan Sentra
421 Great Deals out of 56,370 listings starting at $1,400
Used Toyota Corolla
717 Great Deals out of 73,207 listings starting at $1,950
Used Hyundai Sonata
604 Great Deals out of 52,338 listings starting at $1,495
Used Chevrolet Malibu
876 Great Deals out of 81,397 listings starting at $995

Used Cars For Sale

2017 Nissan Altima For Sale
3 Great Deals out of 39,395 listings starting at $14,995
2016 Nissan Altima For Sale
99 Great Deals out of 9,178 listings starting at $11,499
2015 Nissan Altima For Sale
241 Great Deals out of 9,454 listings starting at $9,345
2014 Nissan Altima For Sale
265 Great Deals out of 7,853 listings starting at $4,900
2013 Nissan Altima For Sale
89 Great Deals out of 3,806 listings starting at $3,900