How do you replace evap canister on 2003 Santa Fe?

The evaporative emissions system consists of 5 major components
1. Charcoal Canister
2. Canister Close Valve (CCV)
3. Purge Control Solenoid Valve (PCSV)
4. Fuel Tank Pressure Sensor (or differential pressure sensor) (FTPS)
5. Canister Air Filter & Fuel Filler Cap

If you haven't done it already, you should have a qualified Hyundai Service Technician properly diagnose this problem. My experience tells me you have a Purge Control Solenoid Valve (PCSV) that is sticking open and is applying constant engine vacuum to the charcoal canister (which was just freshly saturated with gasoline/fuel vapors when you refueled the vehicle).

You can Go to www.hmaservice.com and register your vehicle by VIN #.. you'll then have access to wiring diagrams, shop manuals, service bulletins, illustrations and procedures, etc.

I would fill it with oil and make it go away.

The code you cite, P0447 - Evap. Emission Ctrl. System - Vent Circuit Open
This vent circuit is call the CCV (Canister Close Valve). This valve normally stays 'OPEN' to allow outside air flow through the charcoal canister, which absorbs fuel vapors when you put gas in the tank, then the engine vacuum pulls air through it to recollect the fuel vapors and burn them in the cylinder combustion process.

There is a two-pin connector connector plugged into/connected to the CCV. Perhaps it somehow disconnected itself or some foreign object damage the wire harness breaking the connection (circuit 'open' condition), which would set this code. Another possibility is the CCV coil (Solenoid) has an open coil/contacts in it. Regardless, before you start throwing money after parts, have it properly diagnosed first. The problem may simply be a loose/oxidized connection/contact between the CCV and the ECU.

Hope this helps.

Sounds like the purge control valve on your evaporative system is stuck open. In this case, what happens during fill-up is that fuel vapors are forced from the fuel tank into the intake manifold, effectively flooding the engine.
Todays fuel tanks are vented back into the engine. A "Carbon Canister" is supposed to absorb the vapors and then feed them into the engine in a controlled manner. If your canister is saturated or the purge valve stuck open, the fumes can "flood" the engine while refueling. Try holding the throttle wide open when you start after refueling to clear the vapor quickly.

Also next time you go to fill up, don't fill it all the way, maybe half or so, since the evap lines are at the top of the tank this should solve your problem, and give you at least some good information to take to your mechanic

you have to sometimes remove the washer bottle itself to get to the motor give these websites a try www.alldatadiy.com and www.autozone.com if all fails stop by your local library and get your hands on a Haynes auto repair manual for your car wish you the best of luck Michigan Man.

Sounds like a first-time project; don't start on this without documentation available. If the factory service manual is too costly (often the case), I recommend Haynes manuals which will give you all the information you need for any project you can do at home:
Santa Fe manual

EVAP system is a very COMPLEX system. There is not enough time or space here to adequately diagnose your problem. Components involved are Canister Close Valve, Charcoal Canister, Canister Filter, Purge Contro Solenoid Valve, Fuel Tank Pressure Sensor, EVAP tubes & hoses, Fuel Pump Gasket, fuel tank itself, check valves, Electrical Wiring to and from the ECM and components. Best solution: Pay diagnistic fee and have professionals diagnose problem. This way you'll know EXACTLY what the problem is and what's required to fix it (parts, labor, tax, time-frame, etc.).

EVAP Emission Control System - Small Leak Detected (1.0 mm). This code can be set when 1. fuel filler cap is not completely tight, 2. when various hoses get punctured or the canister close valve does not seal completely, 3. there is an actual leak in the charcoal canister, fuel tank, or other EVAP system component, 4. if any one of these components are malfunction (a), fuel tank pressure sensor, (b) purge control solenoid valve, (c) canister close valve, or (d) fuel cap. An engine vacuum leak would not set this code.
Solution: Take the vehicle to a Hyundai Dealership for proper diagnosis/repair.

the sloenoid valve is located on the top of the engine. it has 3 vacuum hoses going to it. label them before removing.
it has a 2 wire connector.

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Against the middle of the firewall in the engine compartment. If you are looking at the engine, its behind the surge tank of the intake manifold. Has one vacuum hose going to intake manifold and one going to EVAP canister in the center of the truck, and one 2 terminal electrical connector.