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WHAT DOES THIS CODE MEAN P0446 FOR MY CAR - 2005 Pontiac Grand Prix

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DTC P0446 Evaporative Emission (EVAP) Vent System Performance
Refer to EVAP Control System Overview .

System Description
This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path. The control module commands the EVAP canister purge valve ON and the EVAPcanister vent valve ON. This allows a vacuum to be applied to the EVAP system. Once a calibrated vacuum level has been reached, the control module commands the EVAP canisterpurge valve OFF and the EVAP canister vent valve OFF. The control module monitors the fuel tank pressure (FTP) sensor for a decrease in vacuum. If the vacuum does not decrease to near 0 inches H2O in a calibrated time, this DTC sets.

Posted on Nov 26, 2014

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Try googling for the error code

Posted on Nov 25, 2014

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What does the code P0446 onn a 2002 2.4l 4 cylinder Dodge Stratus SXT mean?


Generally in google search type obd2 then po446 or whatever and an obd2 site will come up w specifics for that code. Vehicle specific generally doesnt matter. http://www.obd-codes.com/p0446 typing odb2 before the code is important to find the right site. Refer to link for specifics or search using that format I suggested.

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What does code p0446 mean on a 2001 Buick Centry?


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)

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P0068, P0171, and P0446 and new ones down below


-I hate to say that but absolutely NO. If you don't know much about car. All these codes are emission code.
P0068 Mean Throttle position sensor.
P0171 Mean system too lean.
P0446 Mean evaporator emission control system has not correct flow
P0507 Mean Idle air control is too hight.
P0116 Mean engine coolant temperature.

Need to have a mechanic to check one by one to determine which part is effect before replace it.

Good luck

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CODE P0446 WHAT DOES THAT STAND FOR MEAN


p0446 is a generic code for Evap.Emission Control System Vent Control Circuit Malfunction.

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What does the diagnostic code P0446 for a 2001 isuzu rodeo mean?


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

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1 Answer

P0446 code what is this? how can it be fix?


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

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1 Answer

04 chevy avalanche. failed inspection. OBD11


Hi, a P0446 means Evaporative Emission Control System Vent Control Circuit Malfunction

Full details @ http://www.obd-codes.com/p0446

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2007 Chevy Colbalt 2.2 engine P0446 Code is on. what does it mean and how much does it cost to fix


Code P0446 is related to your vehicles evaporative emissions system. Often this is caused by your gas cap not being properly tightened.

Before running out and spending money on this issue be sure the gas cap is in good condition and make sure it's tight. (At least 2 or 3 turns after it begins to click)

Drive the car for a few days. If the check engine light doesn't turn off you will need to go to a repair shop who can scan and troubleshoot the problem.

Good luck.

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Both codes are with the EVAP SYSTEM, there are numerous items it could be. A repair shop that does Toyotas or the delaler would be the best to check it out for you. Its not anything that will leave you walking or disable the car.

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Code p0446 1997 nissan maxima


how did you fix your p0446 code?

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