Question about 2002 Dodge Neon

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

Do I need EVAP schematic to check the hoses and lines? I just bought a 2002 Dodge Neon and it failed the smog test, Codes 442 and 455 came up. The tech said he checked my gas cap but he could or wouldn't tell me if that was the problem. It was at a "test only" station and said he was not allowed to give me advice. Is that true?

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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

Posted on Nov 26, 2014

  • Art Hawksford
    Art Hawksford Nov 26, 2014

    I think some of these hoses you can check for leaks by disconecting and use a pressure gauge or finger tip maybe

  • Dianne Dorman
    Dianne Dorman Jun 18, 2017

    Thank you!

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THERE IS NORMALLY AN UNDERHOOD EVAP ROUTING DIAGRAM

Posted on Nov 24, 2014

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6ya6ya
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Posted on Jan 02, 2017

  • 3640 Answers

SOURCE: Failed Emision test

po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

Posted on Sep 01, 2009

Pops65Pony
  • 137 Answers

SOURCE: Check Engine Light won't go off

If you have an Advance Auto Parts store where ever you are, they will read the code and tell you exactly what to code is and what it means. Any mechanic who "guesses" isn't a mechanic at all - he's a thief. Emissions leak can be any number of things, but not the gas cap!

Posted on Aug 21, 2009

motor1258
  • 6674 Answers

SOURCE: trouble code po456 evap small leak ? could it be the gas cap ?

Can't say 100% obviously, but quite often that is the cure, but try to take some time to make sure all your hoses , in the system are in good shape & tight.

Posted on May 31, 2009

keithheavili
  • 410 Answers

SOURCE: im getting a P0441 EVAP emission control system

Here is what I could find for your code error as potential causes:
After market parts and accessories nonconforming to the EVAP system specifications.
Damaged, missing or improperly installed fuel filler cap.
Blockage in fuel vapor hoses/tubes (EVAP canister tube, EVAP canister purge outlet tube or EVAP return tube) in EVAP system.
Disconnected or cracked fuel vapor hoses/tubes in EVAP system.
EVAP canister purge valve stuck closed.
Canister vent (CV) solenoid stuck open.
Fuel tank pressure (FTP) sensor malfunction.
EVAP canister leaking.
Fuel vapor control valve tube assembly blocked.
Fuel vapor vent valve assembly blocked.

Obviously the gas cap would be the easiest and cheapest thing to fix.  Just make sure it is put on correctly and tight.  If it is not that, I would have to suggest to take it to a mechanic because the other problems on that list are not really DIY material.  Hopefully it is the gas cap and you can take care of it yourself.  Good luck.

Posted on May 17, 2009

fixincars
  • 335 Answers

SOURCE: EGR System .....Not Ready

It could take more driving always make sure you have between 1/4 -3/4 tank or monitors cant run has anyone checked to make sure the EGR is functioning? Not just the valve but the EGR system?

Posted on Oct 01, 2008

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1 Answer

How do you detect evap leak problem in a 2002 dodge neon


You need what is called an Evap Smoke Machine
only a repair shop would have,to find the leaks

Without Evap System knowledge & a Schematic
of the system components ,you can not personally do anything

Aug 30, 2012 | Cars & Trucks

1 Answer

My malfunction indicator light is on dodge neon 2001: got codes P1684,P0455


this obd2 trouble code table can help you understand the meaning of code.
and for p0455, you can try:

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

Sep 01, 2011 | 2002 Dodge Neon

1 Answer

How to find and fix small evaporative leak in emmission control


this could be several things causing this code,first make sure gas cap has been turned till clicks every time u fill up,could be bad gas cap,then follow fuel lines from the tank under car to the evap box,checking hoses for cracks or need replaced,then if none follow the lines again to motor,most of the time this is also some small lines vacumm hoses that need replaced going to the evap canister,but check vacumm hoses dealing with the evap system,just went through this for my mom on her van and it was two small 5/16 hoses hidden under the air filter box,you could also pay a shop to doo a smoke test on car,could be costly,would try myself first,hope this helps you,it did me and saved a bundle

Aug 21, 2011 | 2002 Dodge Neon

1 Answer

Engine coad po442 how do i fix it


PO442 is the data trouble code for (evaporative emission control system leak detected "small leak") it means that the OBD-II system has detected a small vacuum leak in the evaporative control system.

You will need to find the vacuum leak in the evaporative control system, check for cracked or broken vacuum lines and hoses, especially the vacuum hoses and lines around the evaporative (Evap) canister and the (Evap) solenoid. Also check the gas cap seal for damage.

Vacuum hoses and lines should be checked very well for any cracks or breaks, because they usually hide under the vacuum line or hose.

May 02, 2010 | 2001 Dodge Durango

1 Answer

My 2005 neon failed emissions. It gave me a codes 0441. What excatly does that define?


Trouble Code: P0441 (2.0L L4 VIN C Auto)
EVAP Purge Flow Monitor Fault Print this code dataprint_icon_codes.gif Number of Trips to Set Code: 2
OBD II Monitor Type: CCM Details
Indicators: MIL Details
Trouble Code Conditions:
Engine at idle speed in closed loop for 200 seconds, BARO Sensor signal less than 8,000 feet, ECT Sensor more than 160ºF, no Low Fuel, MAP Sensor signal less than 23.7" Hg, and the PCM did not detect any purge flow through the EVAP system during this test.

Possible Causes:
  • EVAP purge solenoid vacuum line loose, leaking or restricted
  • EVAP purge solenoid stuck leaking, stuck open or stuck closed
  • EVAP purge vacuum line to canister leaking or disconnected
  • EVAP canister leaking, damaged or has failed

2005 Dodge Neon - All Configurations - P0441

Nov 01, 2009 | 2005 Dodge Neon

1 Answer

MY 2002 NEON HAS 2 CODES P0442 AND P0455 I HAVE CHANGED THE FUEL CAP BUT STILL KEEP COMING BACK


both those codes point towards evap system leak, p0442 being a small leak and p0455 being no purge or large leak, check the charcoal canister and linds attached to it for holes.

Oct 27, 2009 | 2002 Dodge Neon

2 Answers

2003 Dodge Neon has a pp0340 , 440 codes I think


CODE PO340 NO CAMSHAFT POSITION SENSOR CIRCUIT FAILURE.CODE PO440 EVAP PURGE SYSTEM FAULT.POSSIBLE CAUSE THE EVAP PURGE VALVE VACUUM SUPPLY IS LEAKING OR CLOGGED.OR THE EVAP PURGE SOLENOID HAS FAILED.

Oct 12, 2009 | 2003 Dodge Neon

1 Answer

Im getting a P0441 EVAP emission control system purge flow fault code on my 2002 dodge neon


Here is what I could find for your code error as potential causes:
After market parts and accessories nonconforming to the EVAP system specifications.
Damaged, missing or improperly installed fuel filler cap.
Blockage in fuel vapor hoses/tubes (EVAP canister tube, EVAP canister purge outlet tube or EVAP return tube) in EVAP system.
Disconnected or cracked fuel vapor hoses/tubes in EVAP system.
EVAP canister purge valve stuck closed.
Canister vent (CV) solenoid stuck open.
Fuel tank pressure (FTP) sensor malfunction.
EVAP canister leaking.
Fuel vapor control valve tube assembly blocked.
Fuel vapor vent valve assembly blocked.

Obviously the gas cap would be the easiest and cheapest thing to fix.  Just make sure it is put on correctly and tight.  If it is not that, I would have to suggest to take it to a mechanic because the other problems on that list are not really DIY material.  Hopefully it is the gas cap and you can take care of it yourself.  Good luck.

May 17, 2009 | 2002 Dodge Neon

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

2002 chrysler neon error code p0456


a small evap leak is often interpreted as a loose gas cap , which it can be , it means the evap systems integrity has been breached , it can be an electrical solenoid , switch or just a vacuum line in the system . a bidirectional scanner can run the evap test after checking the gas cap , most well equipped shops can hook up a smoke machine to the evap system service port and run the smoke test , it there is a leak you will see the smoke , makes the diagnosis quickly . get an estimate from a reputable shop , by the way this problem has no effect on drivability , but should be fixed . cheers

Jan 13, 2009 | 2003 Dodge Neon

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