P0446 Code
09-05-2016, 02:00 PM
#1
On The Tree
Thread Starter
P0446 Code So my car threw an SES code yesterday and it was P0446. The code itself has something to do with the Evaporative Emmission Control System Vent Control Circuit. I've read that most of the time it's usually a bad or clogged vent valve. How do I remove and check the vent valve? (Sorry I'm not mechanically inclined) And how serious is the P0446 code?
The second pending code on my car is the same as the first code
The second pending code on my car is the same as the first code
09-12-2016, 09:35 AM
#2
I would just replace the Vent. Proper way to test is to use a GM Tech 2 scan tool and command the vent on and off to make sure power is there at the vent. You can also check the vent for continuity with a electrical meter (Ohms). Is the Vent reads open, or OL, its bad
The cost to have a shop diagnosis is going to be way more than just putting a new $20 vent on. Chances are, the vent is bad.
Kyle
The cost to have a shop diagnosis is going to be way more than just putting a new $20 vent on. Chances are, the vent is bad.
Kyle
09-12-2016, 11:37 PM
#3
On The Tree
Thread Starter
I would just replace the Vent. Proper way to test is to use a GM Tech 2 scan tool and command the vent on and off to make sure power is there at the vent. You can also check the vent for continuity with a electrical meter (Ohms). Is the Vent reads open, or OL, its bad
The cost to have a shop diagnosis is going to be way more than just putting a new $20 vent on. Chances are, the vent is bad.
Kyle
The cost to have a shop diagnosis is going to be way more than just putting a new $20 vent on. Chances are, the vent is bad.
Kyle
I had a closer look at my gas cap and turns out the rubber seals on the cap were cracked. I replaced the cap and cleared the code, but if it comes back on I'll definitely check out the vent. Thanks!
09-15-2016, 11:54 AM
#4
https://www.obd-codes.com/p0446
this code is pointing to the vent solenoid itself being electrically bad, so you would need to replace it, it's unlikely the gas cap replacement will be the solution.
but it's not serious, there will be no performance or gas mileage loss.
biggest problem if you have state emissions you will fail when that or any other emissions related code is present.
this code is pointing to the vent solenoid itself being electrically bad, so you would need to replace it, it's unlikely the gas cap replacement will be the solution.
but it's not serious, there will be no performance or gas mileage loss.
biggest problem if you have state emissions you will fail when that or any other emissions related code is present.
09-16-2016, 01:13 AM
#5
On The Tree
Thread Starter
https://www.obd-codes.com/p0446
this code is pointing to the vent solenoid itself being electrically bad, so you would need to replace it, it's unlikely the gas cap replacement will be the solution.
but it's not serious, there will be no performance or gas mileage loss.
biggest problem if you have state emissions you will fail when that or any other emissions related code is present.
this code is pointing to the vent solenoid itself being electrically bad, so you would need to replace it, it's unlikely the gas cap replacement will be the solution.
but it's not serious, there will be no performance or gas mileage loss.
biggest problem if you have state emissions you will fail when that or any other emissions related code is present.
This is the vent solenoid right? The code came back recently...
09-17-2016, 06:17 AM
#6
It looks like correct part but, Dormans web site shows 911-075 and so does rockauto.
The partsgeek might be correct but list THEIR part number for it and not dorman's.
I also advise you too look up the replace procedure for the vent, You might need to drop the gas tank to replace the vent
The partsgeek might be correct but list THEIR part number for it and not dorman's.
I also advise you too look up the replace procedure for the vent, You might need to drop the gas tank to replace the vent
Last edited by Lup; 09-17-2016 at 06:44 AM.
09-17-2016, 12:46 PM
#7
On The Tree
Thread Starter
It looks like correct part but, Dormans web site shows 911-075 and so does rockauto.
The partsgeek might be correct but list THEIR part number for it and not dorman's.
I also advise you too look up the replace procedure for the vent, You might need to drop the gas tank to replace the vent
The partsgeek might be correct but list THEIR part number for it and not dorman's.
I also advise you too look up the replace procedure for the vent, You might need to drop the gas tank to replace the vent
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09-18-2016, 08:58 AM
#8
If someone on here was nice enough to give me a 4th Gen free of charge, I'd be more than happy to make a "how to" video for you.
Recently someone on here said they had to drop the tank to replace the vent. I have not replaced a vent on a 4th gen, so I'm not sure either
Recently someone on here said they had to drop the tank to replace the vent. I have not replaced a vent on a 4th gen, so I'm not sure either