Question about 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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Posted on Jan 02, 2017
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
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
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
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
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
Tips for a great answer:
Aug 30, 2012 | Cars & Trucks
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
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