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Scan code po456 cnf mod 10 what is it?

Scan code po456 cnf mod 10 what is it?

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2007 Mercury Milan Premier V6 Misfiring


P0300 - Random multiple cylinder misfire
P0301 , 302 and 304 - Cyliners 1, 2 and 4 misfire
P0351 - Ignition coil A primary/secondary circuit malfunction
P0354 - Ignition coil D primary/secondary circuit malfunction

Nov 07, 2013 | Mercury Milan Cars & Trucks

2 Answers

I have a 2004 town and country. I have had codes po440 on for about 9 months with no symptoms. Then po456 showed up. My van started surging wanting to take off after filling the tank. Then it would not...


code p0440 refers to evaporative emission (EVAP) system--malfunction===causes -hose connections--intake leak--EVAP canister
code po456 refers to the evaporative emission system--very small leak detected===causes --mechanical fault--hose---EVAP pressure sensor. The cracked hos may be the fault but I would be looking at the canister for the fault.

Nov 03, 2013 | Cars & Trucks

2 Answers

I have a Dodge Ram F1500 engine light came on code is po456 and po457 were can I find out what that is so I can fix the problem


po456 evaporative control small leak

p0457 EVAP System Leak Detected/Fuel Fill Cap Loose Or Missing

Sep 07, 2013 | Dodge Ram 1500 Cars & Trucks

1 Answer

Codes0441 0442 0455 0456


codes po441 po442 po455 po456. code po441 - EVAP system no flow during purge conditions.code po442 -EVAP system small leak detected conditions. code po455 - EVAP system large leak detected conditions.code po456 - EVAP system very small leak detected. possible causes loose damaged missing fuel cap.fuel tank sensor disconnected or failed. ORING on top fuel sending unit leaking.purge valve vapor line clogged disconnected or purge solenoid failed.vent solenoid not closing or has failed.

May 23, 2013 | 2002 Dodge Durango

1 Answer

What does the code po456 mean?


Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:

* A small leak in any of the EVAP hoses or fuel tank hoses
* A small leak in the purge valve or vent valve
* The EVAP Canister may be leaking

Jan 08, 2013 | 2005 Ford Focus

2 Answers

Engine code po456 on a 2005 mustang gt


It's a code related to an EVAP leak in your emissions system. A lot of people have reported loosening their gas cap, re-tightening it, and then clearing the code with success in it not coming back. Here is a bulletin posted on the issue from ALLDATA

http://ww2.justanswer.com/uploads/paynlessauto/2009-10-05_203445_fueltsb.pdf

Jul 28, 2012 | Ford Mustang Cars & Trucks

1 Answer

Code # po456


A small leak in the evaporative emissions system has been detected.Check gas cap and make sure its tight then reset the computer using a code reader or scan tool.

Jan 31, 2012 | 2002 Dodge Durango

1 Answer

I have a obd code of PO456 for a 2003 dodge Durango.Do you know what that would be.


When you get the code,find out what it is,or buy a code reader and a book of codes

PO456 EVAP Contol System Leak (Very Small) 0.508mm (0.020 inch)

Gas Cap
Holes or cuts in fuel vapor hoses
Loose hoses
Evap Component failures
Vent solenoid open
Canister Purge Valve,issues

And on and on


Have a smoke machine put on the system and repaired

Nov 05, 2010 | Dodge Durango Cars & Trucks

2 Answers

PO456 code on 2002 Jeep Wrangler.Where do I start?


p0456 is ayoun evap fault honestly this is a job for a professional with the correct diagnostic equipment jsut from memory it is a vent control fault. if you have access to alldata or mitchel on demand you can get diagnostic steps for the proper diagnosis. unless you have the proper tools this is a job left to a good repair technician that you trust sorry i cant give you a straight answer but you will throw away money buy just replacing parts and hoping it fixes it, just food for thought if the code is cleared it will take time to come back the only way to conferm the repair is a evap self test that can be done with the adiquite scan tool

Nov 12, 2009 | 2002 Jeep Wrangler

1 Answer

Trouble code po456 evap small leak ? could it be the gas cap ?


Can't say 100% obviously, but quite often that is the cure, but try to take some time to make sure all your hoses , in the system are in good shape & tight.

May 31, 2009 | 2002 Dodge Grand Caravan

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