Question about 2004 Hyundai Santa Fe

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Check Engine Code PO446

What is the cause/correction for an Evap System Vent Malfunction

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Purge control valve sticking either open or closed. location depends on what engine you have

Posted on Jul 21, 2009

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Code po446 what is it

Its what is called the EVAP. system the code is for the vent solenoid .Gas vapor in a vacuum is drawn from the fuel tank when this vent is commanded to be open drawn into a canister filled charcoal and stored until the canister purge solenoid is commanded to open .
This happens when the engine speed is at a higher RPM level and is supposed to send the vapor to the engine to be burned instead of VOC'S going into the atmosphere .But its a crazy lie the last time I filled up more VOCS got into the atmosphere then a gas tank vent could do in 6 month or so .
You can try cleaning the filter in the vent solenoid it might work but the part is about 70 dollars its in the rear between the tank and the canister look for hoses .

Jun 18, 2016 | 2006 Chevrolet Impala

1 Answer

Buick rendezvous 2002 from wheels, have 2 codes PO446 PO453

code p 0446 refers to evaporative emission (EVAP) system---vent control---circuit malfunction===causes --wiring---EVAP canister purge valve ---ECM
replace the purge valve
code p 0453 refers to EVAP pressure sensor --high input ===causes --wiring short to positive --EVAP pressure sensor ---ECM
replace the sensor

Nov 02, 2015 | 2005 Buick Rendezvous

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What will fix codes po320 & po446?

EOBD code Fault location Probable cause
P0320 Crankshaft position WiringCKP/RPM ,
(CKP) sensor/engine sensorECM
speed (RPM) sensor
circuit malfunction
EOBD code Fault location Probable cause P0446 Evaporative emission (EVAP) system, vent control - circuit malfunction Wiring, EVAP canister purge valve, ECM Hope that helps

Oct 19, 2014 | 2007 Ford Explorer Sport Trac

1 Answer

Hello there,my 2001 echo is lighting up trouble codes p0440 p0441 p0446; how and where should i start?

code p0440 refers to evaporative emission (EVAP) system--malfunction=== causes --hose connections --intake leak--EVAP canister purge valve
code po441 refers to EVAP --incorrect flow detected==causes the same as for po440
code po446 refers to EVAP system vent control --circuit malfunction===causes --wiring---EVAP can purge valve--ECM
generally I would replace the purge valve as it is common to all codes

Feb 03, 2014 | Cars & Trucks

1 Answer

Po156 po161 po446

code p0156 refers to heated oxygen sensor 2 bank2 circuit malfunction===causes--heating inoperative--wiring---HO2S--EcM
code p0161 refers to HO2S 3 -circuit malfunction==causes the same as p0156
p04456 refers to evaporative emission (EVAP) system-vent control-circuit malfunction====causes--wiring--EVAP canister purge valve--ECM

Oct 13, 2013 | 2005 Kia Spectra

1 Answer

P0446 on 1997 ford expedition what is the most common culprit and where is it?

code po446 refers to evaporative emission system (EVAP) vent control--circuit malfunction==causes Wiring--EVAP canister purge valve --ECM. The purge valve is not working and causing your problem. Replace it.

Aug 23, 2013 | Cars & Trucks

1 Answer

My 00 xterra had a code of po446

Trouble Code: P0446

EVAP Vent Control Solenoid Circuit Malfunction

Possible Causes:

Vent solenoid circuit open, shorted to ground or to power (B+).Vent control solenoid is damaged or has failed..PCM has failed.TSB 00-060 (7/00) contains information related to this code.Trouble Code: P0455

EVAP System Gross Leak (0.080") Detected

Possible Causes:

.EVAP control system pressure sensor is damaged or has failed.EVAP purge solenoid or canister vacuum line loose or off.EVAP purge solenoid is damaged or has failed.EVAP emission canister is dirty, restricted or full of water.EVAP canister vent control valve is damaged or has failed.Fuel tank cap loose, missing or it is the wrong part number.Fuel tank temperature sensor is damaged or has failed.Fuel tank vacuum relief valve is damaged or has failed.Large leak in the EVAP canister or in the fuel tank area.ORVR system is damaged or has a large leak in a component.Refueling control valve is damaged or has failed.Vacuum hose leaking between intake manifold and Purge valve.Here are the codes,take part back and get refund.

Dec 03, 2012 | Cars & Trucks

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Check engine code po446,also can only put gas in very slowly or gas will gush out of filler pipe.don't know if both are related.

yes, 446 is fuel EVAP system vent valve circuit malfunction. Check the connection to the vent valve. If connection is good, valve/solenoid may have failed. The vent valve is between the EVAP charcoal cannister and the engine along the vacuum line. If you can tell me your model and year, I may be able to give you more specific insrtuctions.

Nov 12, 2010 | Chevrolet Avalanche Cars & Trucks

2 Answers

1997 toyota camry check engine light on codes are po441,po446

p0446 is an evap code for incorrect purge flow, check the rear vacume switching valve. its above the rear sub frame

Apr 05, 2009 | 1997 Toyota Camry

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