Question about 2005 Dodge Neon

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2005 dodge neon 2.0. Check engine light reads 0441 leak in evap system also has poor idle and occasionally will not start. Replaced plugs and wires. When car doesn't start I have taken the IAC valve off and sprayed carb cleaner and the car starts everything is fine but now the engine is on. Please help.

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The P0441 shouldn't cause a no start it is indicating there is a problem in the evap system related to the EVAP solenoid, EVAP solenoid vacuum supply or the NVLD switch which is a switch that vents the tank at proper times. I would do a fuel pressure check if it starts at times with carb cleaner. there may be a small leak in the evap system that a qualified shop with a smoke machine should be able to check out, but that code shouldn't be the cause of your no start. When first started it needs the proper fuel pressure and will normally run fine once it's started until the pump degrades to a spot that it just won't run correctly any more. the computer on today's cars can compensate for a lot of things to a certain point till they just won't run anymore.

Posted on Sep 27, 2010

  • dan197man Mar 07, 2011

    would a clogged fuel filter that leads to lower fuel pressure trigger this evap code 441 ??????
    or a weak failing fuel pump ?????

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Sounds like you mean the problem could be a leak in the EVAP system. The computer vents the gas tank to the vapor canister several times while you are driving.
The engine produces vacuum when it is running.
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Hi there:
DTC P0441 - Evap. Emission System Incorrect Purge Flow
Possible causes: poor/loose connection, faulty purge control solenoid valve (PCSV), faulty PCM.

Check for loose electrical connector and for loose or broke vacuum hose to it. If ok, you will need a voltmeter and vacuum gauge to test it. If fails test, replace it, if ok, then likely a faulty pcm. Most of the time it is either a bad vacuum hose to it or faulty PCSV.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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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

3 Answers

P0441 code means what ?


Evaporative Emission Control System Incorrect Purge Flow
The "EVAP purge flow" faults are issues between the carbon cannister and the intake. The EVAP leak detection generally concerns the fuel tank to carbon cannister plumbing.
A little background. The EVAP or evaporative emission system is a control system to keep vapors from evaporation in the fuel tank from getting into the atmosphere. The fuel tank is not vented, but rather the vapors are piped to the carbon cannister (usually located behind the pass. side front wheel) where the charcoal element absorbs the vapor. This is actually a vapor "storage" device. Under certain engine operating conditions, the ECU activates the Cannister Purge Valve (N80) which opens and allows the engine vacuum to **** the fuel vapors back out of the carbon cannister. This purges the vapor, allowing the cannister to absorb more vapor. This evap system has been on vehicles since the '70s.
As part of the OBDII standard effective for 1996 cars and newer, it was mandated that leaks in the systems must be detected and reported as a fault which will set the Check Engine Light (CEL). To detect leaks, the system is pressurized by a pump so that leaks can be detected by a lack of appropriate pressure in the system. If there is a leak, such as a cracked vent hose, loose (or leaky) gas cap, poorly installed or defective O-rings on the fuel level senders on the fuel tank, etc. a code will be set. On the cannister to intake side, leaks are detected by deviations in the idle control system. If you have leaks in the lines from the carbon cannister to the intake, intake leaks, a defective purge valve, etc you will often get purge flow faults.
My first recommendation is to closely inspect all the small vacuum lines connected to the intake manifold. The corrugated plastic lines are often the culprits, as well as the fabricate covered vacuum lines. Also consider replacing the gas cap.

Jul 06, 2009 | 2004 Dodge Neon

1 Answer

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If fuel trim is high at all speeds and loads look for pcm input fault, maybe a maf sensor problem?
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If you have the spider fuel system, that system is noted for problems. key on engine off, 60--66 psi fuel pressure.

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