CHECK ENGINE

Forum for Infiniti M37, M56 M35h Hybrid and Q70 owners.
nabm37x
Posts: 12
Joined: Sat Mar 09, 2019 1:31 am
Car: infiniti m37x 2011

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hey guys,

I hope someone could help me there.

i have a check engine that always comes up and the code error says very small leak detected... is it on my muffler?? is it findable (since its a very small leak) or I should change the whole muffler line

thanks


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Ilya
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Joined: Fri Apr 23, 2010 11:20 pm
Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
Location: Charlotte, NC
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What is the code? And how long has it been happening? How many miles on the car?

nabm37x
Posts: 12
Joined: Sat Mar 09, 2019 1:31 am
Car: infiniti m37x 2011

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the code is P0456, its been happening for a year now and the car is at 132 000 KM

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armybrat
Posts: 548
Joined: Sun Sep 27, 2015 8:43 am
Car: 2012 M56x with Tech Package (sold)
Custom 2-1/2" X-pipe exhaust with OEM sport mufflers
HPS intake hoses
Uprev tune
Location: Winston-Salem, NC

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nabm37x wrote:
Mon Nov 11, 2019 10:43 pm
the code is P0456, its been happening for a year now and the car is at 132 000 KM
Nothing to do with the muffler - it's related to your EVAP system. You have a small breach in the vacuum lines from your fuel tank to the charcoal canister to your intake. Purge valve and/or canister vent valve could be bad, canister could have a crack, gas cap could be faulty or loose, fuel tank could be leaking, or a cracked hose. The code is thrown when the EVAP system performs a leak test by closing the normally open valves to check vacuum. It doesn't take much of a hole or crack to set the DTC.

Also, when you fill up make sure you don't "top off" by repeatedly squeezing the gas nozzle. Excess fuel can get into the vapor lines and cause problems with your control valves. When the nozzle clicks the first time - stop filling up.

Malbec 56 Beast
Posts: 605
Joined: Wed Feb 15, 2017 7:32 pm
Car: 2013 Infiniti M66xS Totaled 4/11/20
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2010 Subaru Legacy
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I'm one of those guys that tops off the tank, I am guessing I should stop doing that.

Shiz

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Ilya
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Posts: 9808
Joined: Fri Apr 23, 2010 11:20 pm
Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
Location: Charlotte, NC
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Malbec 56 Beast wrote:
Tue Nov 12, 2019 12:15 pm
I'm one of those guys that tops off the tank, I am guessing I should stop doing that.

Shiz
I did it for a while and then stopped for a few years and recently catch myself doing it again. Will need to be better lol.


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