Question about Honda Odyssey

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My emission light came on in our Honda Odyssey last Friday, checked gas-cap to make sure it's all good and tight. Emission light still on... What other problems do I need to check ? PLEASE HELP

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  • Anonymous Mar 31, 2014

    now the emissions light is on.



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Bring the Honda to a parts store to have them read stored engine codes to determine what's going on (a free service at most stores). They will plug a hand held scan tool into a diagnostic port under the dash, and 'read' any codes in the cars computer. They can explain what they mean and give advice on what to do. If you have any questions, post them with the code #;s here, we'll help.

Posted on Apr 16, 2009

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2006 dodge stratus emission light came on,stopped the car,car was hard to start, jerking motion. p.s. I told my mother-in-law not to buy a dodge.

Posted on Feb 15, 2010


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2007 honda odyssey exl 30k emission system service. what is honda service adviser talking about. just past inspection

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This is to make sure that all your emission systems is up to par no leaks, and everything is working correctly. If you where having emission issues you would be having a check engine light come on. I honestly again would not worry about it.

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I have honda odyssey and the service engin coms on and the cod is p1456 so ineed to figur out thanks.

This probably means:
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  • Usually this is because your gas cap was not fully tightened. Be sure to turn it until you hear a click.
  • After you tighten the cap, it might take a couple days of driving before the light goes-out.
  • Be careful to tighten your gas cap regularly, because otherwise it puts a heavy strain on your emission system.

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What does it mean when the emissions light comes on in your instrument panel? the emissions light came on tonight while driving home I checked my gas cap to make sure it was closed tight and made sure that...

It could be emission related- the gas cap may be on tight but how about when you filled up before?And the cap can actually be bad - meaning it allows to much fuel vapour to escape. Your cap actually has to pass a pressure test during a drive-clean inspection. If your not due for a e-test then you may remove the gas cap and bring it to a drive-clean facility for a pressure test, usually it`s a no cost.If your cap passes then the problem can be related to your emission system on your car which consists of valves, solenoids and plastic vapour lines. Your auto repair shop can diagnose this for you. Either way you are not in any danger if you continue to drive your car.

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Code P0446 is related to your vehicles evaporative emissions system. Often this is caused by your gas cap not being properly tightened.

Before running out and spending money on this issue be sure the gas cap is in good condition and make sure it's tight. (At least 2 or 3 turns after it begins to click)

Drive the car for a few days. If the check engine light doesn't turn off you will need to go to a repair shop who can scan and troubleshoot the problem.

Good luck.

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Any chance it occurred soon after filling up or adding fuel. ? Start by removing gas cap, cleaning the seal good on it, as well as threads and surface where cap seals in filler neck. Quite often it's just a bad/loose seal at gas cap. If that doesn't do it, you may need to replace cap, but check all your vacuum lines etc, just in case, if cleaning and making sure cap is tight doesn't do it.

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If the light is out, no worries. if it comes back on and the cap is tight, there may be other problems and a qualified repair shop will need to diagnose that for you. It may have a Evaporative Emission Leak.

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If still under warranty (emission related, up to 50K by government mandate), take to dealer. If not sure, take it to autozone or other auto parts store and have them hookup computer and printout the error code.

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