Where is the EVC purge valve on a 2003 elantra

SOURCE: emissions test comes up not ready - can't pass inspection

Under the hood, there is a fuse block. I believe it is on the driver's side of your vehicle. Open that box, and pull the "ECU" fuse. Leave the fuse out for at least 5 minutes. Put the fuse back in, start the car, and let it idle for at least another 5 minutes. Do not drive the car, touch the gas, or even look at the gas pedal for these 5 minutes, as the ECU is remapping itself. This will properly reset the ecu and clear the codes. After this you may drive the car.

SOURCE: CIL on, code P0441, using more gas, hard to fill up

In the first place, P0441 = Evap. Emission System Incorrect Purge Flow. The 'CANISTER CLOSE VALVE' you mention is normally OPEN until the ECU (Engine Control Module) decides to check the fuel system for any leakage - IT closes the valve and then applies a vacuum to the system and monitors it for leakage. This valve (CCV), if sticking CLOSED, only MIGHT set P0441. The most suspect component is the Purge Control Solenoid Valve (located on/near the engine) and is also controlled by the ECU. If this valve is malfunctioning, it can absolutely cause this P0441 to SET!... There is also another component which can CAUSE this code to SET... it's the Differential Pressure Sensor (DPS) or Fuel Tank Pressure Sensor (FTPS) connected to the Evaporative Emissions System. It is this component which monitors 'vacuum' pressure on the system to determine if there is any leakage.. its signal is also used by the ECU to monitor 'purge' of the charcoal canister under normal driving conditions. There is yet another component which can cause the ECU to set P0441.. and that is a restriction in the 'purge' circuit.. clogged charcoal canister, air filter, or a kink in the Evap hose(s).

PAUL MC G

• 1280 Answers
• Posted on Oct 18, 2009

SOURCE: 2000 elantra po455 code evap emission control

Large leak?... Fuel Cap not tight or the wrong one is installed. Also, the charcoal canister close valve may be stuck 'open' AND/OR the purge control solenoid valve may be stuck 'closed.'

PAUL MC G

• 1280 Answers
• Posted on Oct 18, 2009

SOURCE: Having the same problem the other guy described.

First of all, these codes are what are called "Powertrain Trouble Codes' (that's what the "P" means P=Powertrain). TCM Request (Transmission Control Module = TCM). The request was to turn on the 'Check Engine" light.
P0720 - output speed sensor circuit malfunction
P0715 - Input speed sensor (turbin speed) circuit malfunction
P0442 - Evaporative Emission System Leak (Small Leak)
P0455 - Evaporative Emission System Leak (Large Leak)
Check fuel filler cap problems - for Evap Emiss leaks
Replace the pulse generators & have the trans fluid replaced/flushed.
The Main Catalyst System Efficiency Bank 1 Is P0420, not P0442
If you had P0420 code, the catalytic converter is shot... and that's an expensive component.

PAUL MC G

• 1280 Answers
• Posted on Nov 04, 2009

SOURCE: i have a 2002 hyundai accent, i could not pump gas

First GUESS.. replace the charcoal canister after you have cleaned out the hoses between it and the canister. Then blow air between the purge control solenoid valve and the fuel tank.