Question about 2001 Dodge Caravan

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Neon code 455 cant find a evap leak ( gross) - 2001 Dodge Caravan

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I have a 2002 Dodge Caravan which had a code 455. The following is a description of this van. The problem was caused by a 12 inch hose located under the van on the drivers side close to and in front of the liquid/vapor separator canisters. The 5/8 inch ID hose was connected between the front (engine side) of the LDP vent valve and the leak detection pump. Oil from the engine had leaked onto the end of hose connected to the pump. The plastic clamp was broken and the hose had swollen until it was very loose. Replacing the hose and clamps fixed the problem. The LDP vent valve is connected to the largest liquid/vapor canister by a 2 inch long hose. You may need to buy the hose from the Chrysler since it is a shaped hose. Any broken or missing clamps should be replaced with the band type sold by auto parts stores. Any other hose which is split should be replaced.

Posted on Sep 11, 2009

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Posted on Jan 02, 2017

  • 31 Answers

SOURCE: code 442 cleared it now code 455 whats up

there is a leak within the evap solenoid and lines.find the leak with a smoke tester.

Posted on Oct 04, 2009

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SOURCE: Evap Emissions Leak

This can be because the Gas cap is not holding the pressure. I would start there first.

Posted on Oct 05, 2009

ghost45
  • 1280 Answers

SOURCE: 2000 elantra po455 code evap emission control

Large leak?... Fuel Cap not tight or the wrong one is installed. Also, the charcoal canister close valve may be stuck 'open' AND/OR the purge control solenoid valve may be stuck 'closed.'

Posted on Oct 18, 2009

iambanshee74
  • 3489 Answers

SOURCE: 455 code or gross evap leak. Replaced all hoses.

have you checked the gas cap. this will also trigger such a code if the seal is missing or broken. it will also stay on if you filled while fueling or forgot to install the cap after fueling just one time. check the cap by going to your nearest smog station and asking(very nicely, no reason paying for 10 seconds worth of work)him to test it. they have a little pump similiar to radiator pressure tester. if you are not near one then a replacement cap from your local chrysler dealer will just good maintenance.

Posted on Nov 03, 2009

ZX2Fast
  • 547 Answers

SOURCE: 2002 dodge carvan shows code P0455

That last time I fixed this code it ended up being a leaking EVAP hose on top of the fuel tank. I had to drop the tank and put new sealant on the hoses to stop the leak.

Posted on Mar 05, 2010

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2 Answers

How do I check the EVAP system of my 2002 Dodge Neon?


I found this on utube for you. enter in tool bar: 2002 dodge neon code 442 455 and you will see a video on how to research & repair

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1 Answer

Codes p0455


455

new year stated. 1996 or 2014?
what car, what engine>?
a generic answer, late.
is:
EVAP Leak Detected (Gross Leak)

the tank has a vent system.
it is tested constantly running for being sealed.
the top cause 99,99% is the gas cap is, loose, missing or wrong kind or bad.
if the gas cap is good. then the system has a breach.
we use a leak down tester to find those leaks. easy.
cracked vent hoses?
etc.
do you want to do tests? do you have tools?
if not.
reset the code and use a new cap.
does 455 come back.
yes, then the tests must be done. guessing will no work
visuals can work, looking for cracks.

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P o 455 CODE


PO 455 -- is a Gross Evap System Leak

A gas cap is a small leak

Need a repair shop to diagnose

Mar 27, 2013 | Cars & Trucks

1 Answer

Code p0455


PO 455 --Evap System Leak Detected (Gross Leak)

Have it scanned & smoke tested to find leak

You can Google any OBD2 Code & read up
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My 00 xterra had a code of po446


Trouble Code: P0446

EVAP Vent Control Solenoid Circuit Malfunction

Possible Causes:


Vent solenoid circuit open, shorted to ground or to power (B+).Vent control solenoid is damaged or has failed..PCM has failed.TSB 00-060 (7/00) contains information related to this code.Trouble Code: P0455

EVAP System Gross Leak (0.080") Detected

Possible Causes:


.EVAP control system pressure sensor is damaged or has failed.EVAP purge solenoid or canister vacuum line loose or off.EVAP purge solenoid is damaged or has failed.EVAP emission canister is dirty, restricted or full of water.EVAP canister vent control valve is damaged or has failed.Fuel tank cap loose, missing or it is the wrong part number.Fuel tank temperature sensor is damaged or has failed.Fuel tank vacuum relief valve is damaged or has failed.Large leak in the EVAP canister or in the fuel tank area.ORVR system is damaged or has a large leak in a component.Refueling control valve is damaged or has failed.Vacuum hose leaking between intake manifold and Purge valve.Here are the codes,take part back and get refund.

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Need vacuum line diagram for 2006 chevy equinox


PO 455 is a gross Evap leak

You need the factory manuals to find the components

There are no , so called free internet stuff
floating around

Your better to have a shop smoke test & diagnose
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1 Answer

My engine light keeps comeing on and reads a code P0455 and when you start it it race up and down could someone please kelp me


455 has to do with an evap leak(gross or large leak). Look for a broken vacuum hose and let me know what you find.

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DTC code P0 455 what is the cause & remedy?


p0455 is Evaporative Emission System Leak Detected (gross leak or no flow) leaks in the evap system can be hard to find without a evap smoker tool

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What is he code 455 for a 2006 hyundai sonata means


CODE PO455 EVAPORATIVE EMISSION SYSTEM LARGE LEAK DETECTED.POSSIBLE CAUSES CANISTER VENT SOLENOID MAY BE STUCK IN OPEN POSITION / EVAP CANISTER TUBE EVAP CANISTER PURGE OUTLET TUBE OR EVAP RETURN TUBE DISCONNECTED OR CRACKED OR CANISTER IS DAMAGED / EVAP CANISTER PURGE VALVE STUCK CLOSED OR CANISTER DAMAGED / FUEL FILLER CAP MISSING LOOSE NOT TIGHT OR THE WRONG PART / FUEL VAPOR HOSES TUBES BLOCKED OR RESTRICED OR FUEL VAPOR CONTROL VALVE TUBE OR FUEL VAPOR VENT VALVE ASSEMBLY BLOCKED /FUEL TANK PRESSURE SENSOR HAS FAILED MECHANICAL FAULT /FUEL TANK CONTROL VALVE IS CONTAMINATED DAMAGED OR HAS FAILED.

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Eng lite stay on test show 455 424


P0424....Heated Catalyst Temperature Below Threshold (Bank 1)

P0455....Evaporative Emission Control System Leak Detected (gross leak)

I would start with clearing the codes and see if they come back. That is the first step of diagnosis.

Some Chrysler products you can clear the code by turning the ignition on and off three times and then starting the engine. If you still get the 455 you will need to find a shop that has a smoke machine to find the leak. It is very difficult to find a leak in an evap system.

Hope this helps

Aug 28, 2009 | Dodge Dakota Cars & Trucks

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