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Discussion Starter · #1 ·
Just had the 05 Fronty in for the annual safety inspection, and as part of it
they do a emissions inspection via the OBD link.
Vehicle failed due to Evap system and O2 sensor reading as "not ready" .
Shop says to return after a "drive cycle" .
The MIL ( SES light ) is not on.

05 SE @ 30,000 miles
 

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did you replace/unhook battery or clear codes? you need to drive the truck 30 miles down the freeway with somewhere between 1/4-3/4 tank of gas. For an 01 and later vehicle you can only have 1 monitor not ready, you have 2 not ready
 

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Discussion Starter · #3 ·
Yes, cleared code 0455, and replaced the vent control valve with the new part(s)
14935-JF00A...all with Nissan parts. Followed service bulletin 11/17/09 .
 

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Yup, you gotta drive it for about 30 mins I believe. Sometimes they tell you 50 miles. That is normal.
 

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Yes, cleared code 0455, and replaced the vent control valve with the new part(s)
14935-JF00A...all with Nissan parts. Followed service bulletin 11/17/09 .
thats why, after you drive it, go back and have them run OBDII diagnostics, and check status of readiness monitors to make sure that your down to 1 or none. Otherwise theyll state it again, fail it and youll have to pay again for next test
 

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You should be able to check system readiness yourself.. Turn the key on, dont start it, and wait about 15 seconds. If the service engine soon light starts blinking, the system still isnt ready. If it stays solid, youre good to go.
 

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Discussion Starter · #7 ·
Just did that test, and it blinked 3 times, then stayed solid for the next 2 mins. ?
 

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You should be able to check system readiness yourself.. Turn the key on, dont start it, and wait about 15 seconds. If the service engine soon light starts blinking, the system still isnt ready. If it stays solid, youre good to go.
Sorry to dredge up an old post... Tried this on my 2006 Xterra - not able to test because O2 sensor not ready... tried your suggestion, and at first it did exactly what you stated it would: after 15 seconds or so, it would blink and then go steady... After driving it for a while, it finally got to the point where the SES turned on and stayed on even for longer than a minute (no blinking in between)... thought it was fine, but when I went back to Smog Station, came up with same error: O2 sensor not ready... uggh...
 
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