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Code po442 i need help

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Which model cc and year is it. i have all technical data

Posted on Feb 18, 2012

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Posted on Jan 02, 2017

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What are the problems when it had diganostic codes of po 496 po 455 po442 and po121


po121 is throttle position sensor is out of range.po442 is emissions system leak detected small leak.po455 is same as po442 but large leak.po496 is high purge flow . Check all the vacuum lines plastic also cause one of them is broken.

Dec 08, 2017 | Cars & Trucks

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Po442 code reader


no nothing to do with transmission ---its an evap code small leak detected this is the usual check gas cap that its on and tight or replace because seal is shot but the following link explains the other problems with assistance in helping repair problem
http://www.obd-codes.com/p0442

Jul 25, 2016 | 2000 Honda Passport

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Error code po442 1998 saturn sl1


Google the codes & read up

You need a repair shop to diagnose
the Evap System

TYPE: OBD PO442

Aug 26, 2014 | Cars & Trucks

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Code po44o for a chevy s-10 pickup


this is a evaporative emissions code. which means there is a leak in the piping or something leading to the gasoline tank that is allowing fuel vapors to escape. More often than not the gas cap isn't tight or needs to be replaced. try these first

May 08, 2011 | 1998 Chevrolet S-10 Pickup

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Engine light on. Codes PO455 and PO442?


There is a pretty good emissions leak somewhere.

Apr 14, 2010 | 2000 Jeep Grand Cherokee

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Code po442 eng ligh on


you have a small leak in your evap system

Apr 04, 2010 | 2001 Hyundai Accent

1 Answer

Ford trouble codes po442.......po455.where to look for problem. have repacedgas cap.


EVAP Codes. You will have to go thru entire evap system,looking for a small leak (po442) Hoses,Switches,Valves etc. See if you can borrow a smoke machine.

Mar 16, 2010 | 2004 Ford Explorer Sport Trac

1 Answer

I have the code po442(smalleak) I have replaced


hi you get this code if the gas cap dose not seal so will any pressure loss in the gas tank or a related component get your local dealer to run a smoke test on the evap control system to exactly pinpoint the leak hpoe this helps

Dec 06, 2009 | 1999 Pontiac Grand Am GT

1 Answer

Diagnostic code PO442


PO442 is an Evaporation Emission leak. It's probably a loose gas cap. The fix would be $96.00 at our dealership, since your truck is out of warranty. You may be able to get it fixed cheaper, but you'll be charged a diagnostic fee.

Jun 24, 2008 | 2002 Mazda Protege

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