Nissan Frontier Forums: still 0455 evap. canister code

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Nissan Frontier Forums : Problems / Technical

Topic: still 0455 evap. canister code

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pethia
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Posted: Nov 23 2008 at 3:51pm \| IP Logged

I am just about ready to take the 2003 frontier to a pro....

First 0456 code came up and then 0455 followed after clearing.

I replaced the gas cap with OEM Nissan

Check the evap. vent control (it opens and seals up fine with voltage.

Checked the Purge control that also checked out.

Any other thoughts appreciated

frontierguy
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Posted: Dec 15 2008 at 7:56pm \| IP Logged

VEHICLE ????????? believe it or not, there are specific fixes for specific codes and vehicles. That's why it is VERY IMPORTANT to let us know what you are working on.
Sorry didn't see it in the first sentence.
P0455 is Evap gross leak -you mentioned the VCV is working when you jump it, but it also needs to be tested in active test with the Consult 2 to verify signal to operate the valve is ok.
P0456 is Evap small leak - dirt in the valve could cause this. Also, I have seen the canisters crack at the mounting nuts for the VCV.

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'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.

Nissan Technician 25 + years
2011 John Deere X720SE

waterdragon
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Posted: Dec 22 2008 at 10:30pm \| IP Logged

I have this problem also was driving today and it felt a little heavy then normal then all the sudden my check engine soon light went on. Went to autozone got the code PO455 bought a cap from them thinking it might be my cap but this is an aftermarket cap so I am going to try to get an OEM tommorrow. But anyways if its not the cap how can I fix the EVAP or what do i do next???

PS its a nissan frontier 2003 4 cyl

Thank You

frontierguy
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Posted: Dec 23 2008 at 8:47pm \| IP Logged

waterdragon wrote:

Need to check the VCV to see if it is operating. Best way is with the Nissan Consult 2, as this will do an active test, which verifies if the circuit is ok or not.

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'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.

Nissan Technician 25 + years
2011 John Deere X720SE

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