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Engine light is on and P0455 is the code that shows up. Not sure what the code even means or where to start looking?

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  • Chevrolet Master
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Right, a big leak in evap system. Missing gas cap? Hose came loose between fuel tank and evap cannister, or maybe hose from evap cannister to engine intake manifold? Or possible cannister is cracked (never seen this but...). If I'm confusing you please let me know.

Posted on Sep 27, 2010

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Code p0455 on envoy 2004


large evap leak --check gas cap that it is on --look under truck at rear of fuel tank by spare tire and check the evap canister and hoses the following link will assist you
https://www.obd-codes.com/p0455 How to Fix Check Engine Light P0455 Emissions Purge Valve Replacement How to Fix Check Engine Light P0455 Emissions Purge Valve Replacement

Sep 19, 2016 | Cars & Trucks

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2001 Hyundai elantra - trouble codes P0442,P0507,P0455 and NO DTC


you can look up these codes on actron.com or google that code

Dec 26, 2011 | 2001 Hyundai Elantra

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My 2003 doge g caravan shows engine light on. diagnostic code is p0455. I don't know what that code stands for. could you help me so that I can fix on time


A code p0455 most likely means one or more of the following has happened:
  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • Other leak or damaged piece in EVAP system
Possible Solutions With a p0455, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, and/or
  • Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary

Jun 24, 2011 | Dodge Caravan Cars & Trucks

1 Answer

2000 Dodge Dakota sport truck, check engine light came on. i checked code P0455 came up. checked hoses for leaks and caps to make sure they were tight such as fuel cap


Here is a TSB that includes P0455. Sometimes leaks are hard to find. I found some I would have never found without a smoke machine. When you looking squeeze the rubber hoses crack show up better. Check the hoses good by the batter.ae0717b.png860877a.png

Oct 25, 2010 | 2000 Dodge Dakota Quad Cab

3 Answers

2006 kia rio check engine light on and code P0455


A code p0455 most likely means one or more of the following has happened:
  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • Other leak or damaged piece in EVAP system

With a p0455, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes2.gif, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, and/or
  • Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum2.gif

Nov 09, 2009 | 2006 Kia Rio5

2 Answers

Check engine light is on p0455 is the code whatis it


P0455 EVAP EMISSIONS SYSTEM GROSS LEAK DETECTED.CK GAS CAP.IF IT IS TIGHT U WILL NEED A SMOKE MACHINE TO CK THE SYSTEM FOR LEAKS

May 04, 2009 | 2003 Chevrolet Silverado 1500

1 Answer

Check engine Light


The P0455 indicates you have a gross vacuum leak in the EVAP system.
Start at the engine and the vacuum purge valve, start checking the vacuum hoses and lines all the way back to the EVAP canister near the gas tank. Make sure no hose or lines are cracked / disconnected.
If all looks OK, let me know and we will proceed from there. Below is a schematic of the EVAP system for reference.
Good luck and let me know.
Regards,
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Feb 21, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

Chrysler 300m with a check engine light on.


P0455 = EVAP LEAK MONITOR LARGE LEAK DETECTED. I am not sure if you are talking about a Jeep Grand Cherokee or a Chrysler 300M but the code is the same for all cars. This code referes to the gas vapor system on the vehice. Cars today take the gas vapor and instead of venting to the atmosphere they store and re-direct these gases back to the engine to be burned. The EPA mandated that the cars computer test the system for leaks. It does this with a series of valves to seal the system then depending on the system creates pressure and watches for a drop in pressure over a certian amount of time. If it drops too fast the P0455 code is stored and the check engine light comes on. I will tell you that these types of codes even for me take a while to find. There are however usually 3 things that can be the problem. The Natural vaccum leack dection pump, a bad or leaking hose in the system, or the purge valve. You might be better off taking it to a mechanic you can trust to have checked out.

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1 Answer

Gm dignostic code p0455


A little late but check your gas cap first.

http://www.p0455.com

Oct 15, 2008 | 2005 Chevrolet Blazer

1 Answer

Check Engine Light - Code numbers P1486 & P0455


Found on my jeep that the high quality vac line to the evap bottle had split on the under side.

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