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Check engine light . code says p0455. How do i fix it.

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  • Rodney Clark
    Rodney Clark Aug 31, 2010

    This code's description is P0455 Evap Emission System- Large Leak.
    Usually large leak means you drove or still driving your vehicle with
    loose or missing gas cap. Check your gas cap if it is tight. Even if
    that is the case , tightening it might not turn the check engine light
    off. So you have to erase the code with a scanner. If your gas cap is
    in place and tight then you probably have a leak in the emission system
    which includes numerous parts. So it should be inspected by a professional. Please Vote!! Thanks!

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Posted on Jan 02, 2017

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SOURCE: 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.

Posted on Sep 03, 2008

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emissionwiz
  • 76846 Answers

SOURCE: OBD 2 codes p0442 and p0455, also smell of fuel from ventalation system

These codes indicate a leak(s) in the fuel system, it can be anywhere, you will have to crawl under and try and see where the leak is, you will need a scanner to turn off the light after repairing the leak(s)

Posted on Sep 28, 2008

hotrodtod38
  • 141 Answers

SOURCE: code P0456,P0455, &P0442

hello po442 ,po455,po456 is leak detected possible, check the gas cap , basicaly you have a leak that is larger than 0.020' and smaller than 0.040' in the gas evaporative system use your nose to find this one thanks

Posted on Feb 14, 2009

  • 184 Answers

SOURCE: gm dignostic code p0455

A little late but check your gas cap first.

http://www.p0455.com

Posted on May 03, 2009

  • 1986 Answers

SOURCE: 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 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

Posted on Nov 09, 2009

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1 Answer

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

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www.obd-codes.com/p0449
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1 Answer

2003 mazda protege p0455 code


Look at the gas tank filler cap. Make sure the seal in the cap is good. If it is cracked it may be leaking air into the system. Simply replacing the cap usually fixes this problem

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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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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

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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.

Aug 14, 2008 | 1999 Jeep Wrangler

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Evap code p0455 on 2003 ford focus zts


code po455 means: EVAC Control System Leak Detected

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