Codes

Asked by Feb 05, 2016 at 05:25 PM about the 2003 Dodge Neon 4 Dr SE Sedan

Question type: Maintenance & Repair

P0456 P0300 P0302 P0303 and P0344

5 Answers

5,965

a google seach comes up with this: http://www.fixya.com/tags/p0303_p0304/cars/dodge/neon personally think that high maintenance items should be suspected...coils do not go bad by themeselves...power to the coil may get rusted tho...personally have changed the oxygen sensor...then the check engine light will go off~...those are some hefty codes tho...system GROUND...assure the battery can get to the brain...the wire that connects to the battery should be looked at...sounds like it just could be a wirebrush at the battery fix...no money needed...tho an oxygen sensor if you've got 30-60,000 miles might be considered an maintenance item~ so clean the battery connections...especially the ground to the ECU~

5,965

2003 in the "rust belt" could probably be the concern!~

78,055

Your po300 code indicates random miss fire, po302,303 are just the miss fire in cylinder #2 & #3, The po300 covers these... Possible causes po300, 302, 303.....> - Faulty spark plug (s) - Faulty ignition coil (s) - Clogged or faulty fuel injector (s) - Intake air leak - Fuel injectors harness is open or shorted - Fuel Injectors circuit poor electrical connection - Ignition coils harness is open or shorted - Ignition coils circuit poor electrical connection - Insufficient cylinders compression - Incorrect fuel pressure.........>>po344 Possible causes...> - Faulty Camshaft Position Sensor - Camshaft Position Sensor harness is open or shorted - Camshaft Position Sensor circuit poor electrical connection - Faulty starter motor - Starting system circuit - Dead (Weak) battery Tech notes Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code....>>P0456 DODGE - EVAP System Small Leak Possible causes po456...> - Missing or loose fuel cap - Incorrect fuel filler cap used - Fuel filler cap remains open or fails to close - Foreign matter caught in fuel filler cap - Evaporative Emission (EVAP) canister or fuel tank leaks - Evaporative Emission (EVAP) system hose leaking - Fuel tank leaking

5,965

all of those faults all at once? think there is a common denominator...and that is of an electrical nature...reconsider cleaning all grounds...perhaps with brake cleaner to assure good connections...would be SAD if you spend money solving all those faults when this might be a simple power problem...that's my two cents worth...take it or leave it!~

78,055

The po300 codes are all basically the same causes. The po344, and po456 are separate issues. Camshaft sensor problems, and emissions issue.

1 of 1 people found this helpful.

Your Answer

Neon

Looking for a Used Neon in your area?

CarGurus has 528 nationwide Neon listings starting at $999.

ZIP:

Dodge Neon Experts

  • #1
    Justin Gilmore
    Reputation
    1,420
  • #2
    Matt Thibault
    Reputation
    1,020
  • #3
    Scott Goodyear
    Reputation
    880
View All

Related Models For Sale

Used Dodge Neon SRT-4
32 listings starting at $1,998
Used Honda Civic
692 Great Deals out of 52,976 listings starting at $1,200
Used Ford Mustang
437 Great Deals out of 42,782 listings starting at $1,488
Used Ford Focus
656 Great Deals out of 64,721 listings starting at $999
Used Toyota Corolla
872 Great Deals out of 65,254 listings starting at $1,250
Used Chevrolet Camaro
497 Great Deals out of 31,045 listings starting at $2,495
Used Dodge Ram 1500
373 Great Deals out of 11,017 listings starting at $1,699
Used Subaru Impreza WRX
36 Great Deals out of 1,153 listings starting at $4,295
Used Ford F-150
3,205 Great Deals out of 226,289 listings starting at $1,250

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.