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Getting p0446 code, need to see all of emission lines

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  • Cars & Trucks Master
  • 5,763 Answers

Depending on the year make and model of this car the lines are diffrent, the code you have have is a leak code, start with the gas cap, make sure it is tight and not loose, take a look at the rubber o ring on gas cap, check for cracks, a smoke machine would be a good tool here otherwise you will need to check all the lines but most of the time it is a cap or valve but with out car info it is hard to help you further

Posted on Sep 02, 2013

  • Johnny    Brown
    Johnny Brown Sep 02, 2013

    After further thinking this code is for a vent valve problem, the most likely cause is due to vent valve problem, again what year,make and model

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6ya6ya

6ya staff

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Posted on Jan 02, 2017

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motor1258

Mike Butler

  • 6674 Answers

SOURCE: check engine light on,results in code P0446-fuel emission cotrol

Well it could be as simple as a new gas cap, or clean seal on it & tighten again. There are a few other items in the system too, but one common one is the vapor canister gets plugged up with dust & dirt.

Posted on Apr 11, 2009

mkv0525

Mike Vincent

  • 358 Answers

SOURCE: Error codes: P0420 AND P0446

the p0420 could and usaully is a bad converter.

Posted on May 28, 2009

Anonymous

  • 39 Answers

SOURCE: P0440, P0441, P0446

Error code P0446 is an Evaporative Control System vent control malfunction. DTCs P0441 and P0446 are recorded by the ECM when evaporative emissions leak from the certain components, or when there is a malfunction in either the VSV for EVAP, the VSV for
pressure switching valve, or in the vapor pressure sensor itself.

Posted on Jul 02, 2009

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1 Answer

How to fix code p0446 on a pontiac g6


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).

https://www.obd-codes.com/p0446

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Evaporative Emission Control System Vent Control Circuit Malfunction

the following links can assist you with problem
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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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1 Answer

Code P0446 what does this mean


P0446....Evaporative Emission Control System Vent Control Circuit

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1 Answer

Fails emissions with fault code p0446.. how do i fix this?


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1 Answer

How do i fix an error code P0446 on my 2002 kia optima? I keep clearing it off but keeps popping up. Any Ideas?


P0446....Evaporative Emission Control System Vent Control Circuit

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1 Answer

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most common is to check that ur gas cap is tight and or needs replacement 442 evap emissions control system leak detected [small] 446 is evap emissions control system vent control circuit malfunction the gas cap will set off these codes if cap is good need to then check the fuel and vent lines for cracked or dried out or partial disconnection

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2 Answers

2002 Buick Century, when the tank is 1/4 full,


P0446 Evaporative Emission Control System Vent Control Circuit Malfunction

The evaporative emission control system checks to make sure there are no leaks in the lines that run from the gas tank to the charcoal canister and up to the engine. It also checks to make sure the gas cap is sealing correctly.
It may just be that the cap was not on tight and the code was tripped.

A dusty environment can also clog the vent line and cause this code.
Have the code cleared and see if it comes back. Some auto parts stores like Auto Zone can read and clear the codes for you.
Hope this helps.

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2 Answers

P0440, P0441, P0446


where is Evap Emission Control System Purge Flow fault

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