2007 g5 evap

code p0446 refers to evaporative emission (EVAP) system--vent control--circuit malfunction===causes wiring--EVAP canister purge valve--ECM
Code p0441 is evap system--incorrect flow detected==causes --hose connections --intake leak--EVAP canister purge valve
replace the purge valve as it is common to both codes
dodge code p1400 is related to a problem EGR system

P0446 is a code for the EVAP vent valve . This part is under the vehicle near the fuel tank , not on the fire wall . That is the purge valve .
P0446 Ford EVAP System Vent Control Circuit
Repair Ford Escape P0446 EVAP Vent Problem

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EVAP Solenoid Location - YouTube

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EVAP Purge Solenoid Removal - YouTube

code p0446 refers to evaporative emission (EVAP) system-vent control-circuit malfunction===causes --wiring--EVAP canister purge valve--ECM
code p0455 refers to EVAP system-large leak detected===causes --hose connections--intake leak--EVAP canister---EVap canister purge valve
code p0172 refers to system too rich, bank 1===causes intake blocked---EVAP canister purge valve--fuel pressure ---EGR system---injector/s ---ECM
because the EVAP purge valve appears in all codes I would be inclined to change that unit first the run the fault codes again

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

P0446 Evaporative Emission Control System Vent Control Circuit Malfunction The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system (EVAP). The description of the fault varies between different car manufacturers, but one thing is common, the code P0446 doesn't directly point to a defective part; some testing might be required to pinpoint the faulty component. What can cause the code P0446: - faulty vent control valve - blockage at the vent hose, vent filter or vent control valve - open or short in the vent control valve circuit - bad charcoal canister - EVAP system leak - faulty EVAP system pressure sensor - bad vacuum switching valve (VSV) - stuck open purge valve (solenoid)

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

code p0446 refers to evaporate emission (EVAP)system-vent control--circuit malfunction===causes--wiring--EVAP--canister purge valve--ECM
replace the purge valve

Always Google any codes you get & read up

PO446-Evap System Vent Control Circuit Malfunction

If the Evap Vent Valve or it's control circuit are bad, then
you can't fill the fuel tank

Hi, your vent valve has malfuntioned. The vent valve is near the tank, and has a hose to the tank and a solenoid to close it. Check the wiring/connector. If OK, try applying 12 volts directly to the solenoid. If it does not click when voltage is applied, replace the solenoid/valve.

P0446 Evaporative Emmission Control System Vent Control Circuit OBD-II Trouble Code Technical Description

Evaporative Emission Control System Vent Control Circuit Malfunction
What does that mean? Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM's driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.
Symptoms There will be no obvious symptoms to driver, other than MIL illumination.
Causes A code P0446 could mean one or more of the following has happened:

• Faulty vent valve
• Open, short or excessive resistance on Vent valve control circuit
• Blockage of vent valve
• Bad PCM

Possible Solutions With a P0446 OBD-II trouble code, here are some things to try:

• Replace Vent valve
• Repair open, short, or resistance problem in control circuit
• Repair open, or short, or resistance problem in power circuit
• Replace PCM