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What is the code p-456 and can I reset to turn off

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PO -456 Evap Control System Leak (Very Small Leak)

Have the vehicle smoke tested and repaired,they will reset the check light

Posted on Oct 05, 2010

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Posted on Jan 02, 2017

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How to reset codes P 1684 and P0456


1684 is an error for the transmission control module loss of power. This can happen if you changed the battery. A 456 error is a emission control canister leak. This can be hoses, valves or gas cap.

Aug 19, 2014 | 2003 Dodge Caravan

1 Answer

Egr code 456


replace your egr and reset the computer

Oct 06, 2013 | Honda Cars & Trucks

1 Answer

Trouble shooting a 456 code on a 2002 subaru legacy


Evaporative emission control system malfunction
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

Oct 17, 2012 | Cars & Trucks

1 Answer

I have a 2006 Dodge Stratus with a 4 cylender, I turned the key on and off three times and the code that came up is 456, could you tell me what that code is telling me what is wrong with my car


Evap emission control system leak, very small. You could have left the gas cap loose. Got gas and left the car running. Make sure the cap is tight. turn it 3 clicks. The light will go out if that was the problem. It takes so many key on's to remove the light. 50 I think

Jun 24, 2011 | 2006 Dodge Stratus

1 Answer

What is the code 456 in mitsubishi eclipse 2007 gs


P0456? very small evap leak, for a 2007 was there a fuel pump recently done? if not replace the gas cap, why would I say this , In smog test yes I am the ***** that keeps people from passing the smog test even if they get a three month notice and they bring it in to me on the due date. And it fails ,Replace the cap. reset the light with a scan tool or do this 40 good ignition start up, with no fault occuring. or 2 trip with no fault occurring. there the light will reset.

Apr 29, 2011 | Mitsubishi Eclipse Cars & Trucks

1 Answer

2004 mountaineer code po 456 came up service engine light on. fuel cap replaced. still on.


the gas cap is the most common if u can reset code do so and if code comes back then need to check-- the fuel lines -purge valve and vent -also the canister--- for cracked disconnected damaged lines

May 09, 2010 | 2004 Mercury Mountaineer

1 Answer

Engine light came on, car is hard to start. Just downloaded the codes and it shows 404 and 456. What part do I need to replace?


404 is an EGR code
and 456 is gas leak

So probably tighten gas cap or replace gas cap for code 456 then for code 404 clean carbon deposits from EGR valve or replace it then e mail me for a certain test that has to be done at sj196653@yahoo.com thanks

Feb 13, 2010 | 2007 Honda Pilot

1 Answer

03 JGC losses power engine light blinks


I would start with a test drive with a fuel pressure gauge on it make sure you have spec. 35 - 40 psi. Clear codes and record all the freeze frame data in obd2 as you will need this in the diag process. 442 and 456 are evap codes I believe, do they return with the 300 misfire codes? Either way you need to reproduce the problem with the gauge on it and get the first code it sets. Could be fuel pump/filter/sending unit assy. In this case you will need to pay attention to the fuel level when this occurs. (same level as before)

Nov 24, 2008 | 2003 Jeep Grand Cherokee

1 Answer

Error codes 442 and 456 on 2003 Chrysler Town and Country


Could be the gas cap.  Do you fill the tank with the engine running?
Otherwise, check the hoses near the Evap canister.  I have 2003 T&C and had the small leak and large leak codes.  I looked at the evap cansiter and the hose coming from the fuel tank vapor line had a huge crack in it, to the point it had fallen off the evap caniser.  I trimmed the end of the hose and reconnected and voila, no codes.
The evap canister is on the driver's side of the van, underneath, slightly behind the drivers seat.
BTW, to clear the codes without an OBDII reader, remove the negative cable for 5-10 minutes (15 to be safe).  The computer resets and clears the codes, except for one that it sets saying loss of power to the memory.

Jul 22, 2008 | 2003 Chrysler Town & Country

1 Answer

Info 456 GT Ferrari


The 456 is the classic Ferrari GT with the 2+2 configuration destined to change how owners view the 2+2 Ferrari. Designed by Pininfarina, the 456 GT is the most beautiful 2+2 GT in the world and will remain a classic. In this Guide William Taylor will take you through all the details of what to look for from electrical bugs to cost of ownership. After the fun of learning about the 456's drivability the Ferrari Life team will explain the expected cost of repairs and possible problems that might occur during ownership of this car. We close off the guide with the expectations of being a Ferrari owner and the mystique of joining this unique club.

May 14, 2008 | 2002 Ferrari 456 Gt

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