Nissan Altima Evap System Small Leak - P0456

Nissan altima evap leak P0456. Checking the purge valve and vent valve by putting power in to see if the valve opens and closes.
Purge valve are close at all time, only purge when it needs to.
Vent valve are open all time, letting the vapor out when it is filter enough (clean).
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[@nicholaemarciano792]

Great video bro. I got a 2016 that’s doing the same thing. Gotta change the gas cap

[@martin8401]

Great video tysm!! Best case is the gas cap

[@marchmadness76]

I change my purge valve today, and replaced the gas cap. Lights still on! I guess it’s the vent canister valve.

[@TFJustinn]

What code was showing for you?

[@marchmadness76]

@@TFJustinn P0456 I just replaced the canister valve. Hopefully that does it.

[@lajanjeff2810]

@@marchmadness76 did the light go away

[@marchmadness76]

@@lajanjeff2810 yes it did. My wife is happy!

[@danielpadron474]

@@marchmadness76 hey, I gotta be real dumb, but where is the canister valve? im having same issue and just cant find it.

[@jrrj1612]

If the car is 2010 or newer, the dtc code falls in the permanent code list and must be repaired correctly and driven until it removes by itself from the permanent code list, to smog the vehicle

[@Ah_Duuu_Ma]

Permanent means its been store permanently till you fix the problem, after repaired clear codes. Drive around 80 to 100miles to complete the driving cycle to do smog.

[@Twobarpsi]

Very nice video!!🏁🏁🏁👍

[@sbond1963]

Did it end up actually being the vent valve on the charcoal canister not the gas cap or the purge valve?

[@Ah_Duuu_Ma]

I did the evap smoke test on the system, no leak. Just a gas cap.

[@qasimmehmood2555]

Thank You

[@meshark_t]

Can it pass emission test if the code is clear, without replacing anything.

[@Ah_Duuu_Ma]

It WILL NOT PASS emission. When check engine light is on, the code has been stored in the ecm (computer memory) can't be clear even if you clear or disconnect the battery. After you clear without fixing, you can't do emission because you have to complete the driving cycle (100 miles on the odometer) so you can do emission. Have to fix the problem, not clear.

[@RGIOG00]

Will that cause your car to be jumpy or hesitant when driving??! because i have this same code

[@Ah_Duuu_Ma]

@@RGIOG00 No. Evap doesnt affect the drivability. Car jumpy and hesitant could be bad transmission. Nissan have a lot of problem with the cvt transmission, always go bad.

[@l1lmb0y2]

What would be the symptoms if evap valve is bad? My altima 19 having p0456 code but no symptoms at all and the car runs fine.

[@Ah_Duuu_Ma]

Evap codes doesn't affect the engine power or drivability at all, but it will set check engine light on because of small or large leak. If gas cap is bad you might smell the gas vapor coming out. Purge valve, vent valve, evap lines or canister bad, its really hard to smell any gas vapor coming out. You have to smoke leak test the evap system to find a leak. Test purge and vent valve one by one to find out which part is bad.

[@JayyStudio]

My car is making a ticking on the vapor purge valve on my 3.5 2010 altima could that be the issue

[@Ah_Duuu_Ma]

Ticking is normal, as long as no check engine light.

[@angelramos318]

Hello bro I hope you answer my question so the problem on my car is the Control valve so my question is When I put air in it should on the other side the air go out.?

[@Ah_Duuu_Ma]

You mean you put smoke through the purge valve or you blow air through it?

[@angelramos318]

@@Ah_Duuu_Ma i blow air bro because I got the code and it say that it’s the Valve so I want to know if it’s normal that the air get out in the other side

[@salammayaly3739]

Thanks

[@MikeJones-qo7vt]

I changed both valves and replaced gas cap still getting codes p0456 and p0444 🤬

[@Ah_Duuu_Ma]

@@MikeJones-qo7vt Smoke leak test the evap system. See where the leak is. It could be from evap lines or canister or gas tank.

[@MikeJones-qo7vt]

@@Ah_Duuu_Ma ok will do

[@DarkWebGN]

What the name of the devise did you use to probe the solenoid?

[@Ah_Duuu_Ma]

Power probe tester $200.

[@evelynarguelles2273]

What’s the name of sensor

[@DarkWebGN]

@@evelynarguelles2273 Evap Sensor

[@bigmanlee8732]

Hey, is this the 2.5 engine?

[@Ah_Duuu_Ma]

Yes 2.5L

[@bigmanlee8732]

@@Ah_Duuu_Ma thanks

[@jizzat]

Where are you located I need a good mechanic in the worst way

[@Ah_Duuu_Ma]

Im in San Jose CA

[@Garage-wt5jl]

Great video but simply clearing the code doesn't show that it's fixed. The car still has to go through thr drive cycle and the engine has to reflect that the problem is no longer present.

[@Assasain31]

Well, the EVAP system is only composed of a few components. Purge, vent, charcoal, filler neck, vent line, etc. He verified the purge solenoid is good, so lets move to the back, verified gas cap is faulty ( clue number 1), verified vent valve is in good shape, o ring not deteriorated, no smoke coming from any other lines and hoses. I will rather have this gentleman wrench on my personal cars than 90% of other technicians, due to the fact that he diagnosed the vehicle properly, instead of just throwing parts at it.

[@jsongs20082007]

What year is the car? Nvm. It’s in the video. 2013

[@vanicemeadows5275]

How did you clear the code?

[@Ah_Duuu_Ma]

Use a code reader to clear it. Go to oreilys or autozone, they clear it for free.

[@anthonyhall8383]

i have the same code and my car is driving so slow

[@Ah_Duuu_Ma]

Evap code shouldn't affect the drivabilty, if the car is driving slow then its a different problem.

[@solarfinder]

There is a DTC bulletin for Nissan. The o-Ring around the valve is determined to go bad. It says to ONLY replace the o-ring. Ugly link, I apologize static.nhtsa.gov/odi/tsbs/2019/MC-10153007-9999.pdf&ved=2ahUKEwiZh72Ny_f_AhVutokEHYbJBUYQFnoECBwQAQ&usg=AOvVaw1impp4wNmbxypPbG_chaHk