|
Forums59
Topics1,040,500
Posts13,982,541
Members144,239
| |
Most Online39,925
Dec 30th, 2023
|
|
 Chevrolet P0446 code
#9926830
04/22/14 02:56 PM
|
Joined: Jun 2005
Posts: 7,206
adam_p
OP
TFF Celebrity
|
|
OP
TFF Celebrity
Joined: Jun 2005
Posts: 7,206 |
I've changed the purge valve on the tank and the vent solenoid under the hood and then cleared the code with my scanner. 3 days later the SES light came back on and is throwing the same P0446. Is it possible the line between the 2 is clogged and can I use my air compressor and blow a little air through it?
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9929794
04/23/14 02:53 PM
|
Joined: Sep 2013
Posts: 406
Dougy
Angler
|
|
Angler
Joined: Sep 2013
Posts: 406 |
you can try. the purge solenoid is under hood and vent solenoid at rear of tank.whats the year make and model??
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9930327
04/23/14 05:46 PM
|
Joined: Mar 2010
Posts: 422
slshaneus
Angler
|
|
Angler
Joined: Mar 2010
Posts: 422 |
i can turn the code off for 125$ most of the guys run a new solenoid and a new line
Last edited by slshaneus; 04/23/14 05:47 PM.
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9930366
04/23/14 05:57 PM
|
Joined: Jul 2004
Posts: 5,363
Alex K.
TFF Celebrity
|
|
TFF Celebrity
Joined: Jul 2004
Posts: 5,363 |
Did you install the updated vent solenoid (the one in the rear)? Its a little kit that relocates the vent itself. Ive also ran across the connector at the solenoid being bad. With out a scanner that can do bi-directional controls of system, its all a shot in the dark.
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9930376
04/23/14 06:00 PM
|
Joined: Jul 2004
Posts: 5,363
Alex K.
TFF Celebrity
|
|
TFF Celebrity
Joined: Jul 2004
Posts: 5,363 |
Post the year/make/model and ill tell which wire at the solenoid to ground so you can at least tell if it's working.
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9932475
04/24/14 05:21 AM
|
Joined: Jun 2005
Posts: 7,206
adam_p
OP
TFF Celebrity
|
|
OP
TFF Celebrity
Joined: Jun 2005
Posts: 7,206 |
06 Silverado 1500 Z71, 5.3L
Did not use the new updated kit with the remote vent.
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9932477
04/24/14 05:21 AM
|
Joined: Jun 2005
Posts: 7,206
adam_p
OP
TFF Celebrity
|
|
OP
TFF Celebrity
Joined: Jun 2005
Posts: 7,206 |
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9933758
04/24/14 06:17 PM
|
Joined: Jul 2004
Posts: 5,363
Alex K.
TFF Celebrity
|
|
TFF Celebrity
Joined: Jul 2004
Posts: 5,363 |
At the vent solenoid, check for 12v on the orange wire with the key on. If you've got power on that wire, backprobe theother wire (white) to ground and listen for an audible click from the solenoid. If you hear it click, its probably working. check the hose between it and the Charcoal canister for dirt. Id also remov the canister and see if alot of dirt/dust comes out of it. If there is dirt in the canister, replace it. A clogged vent, canister, or line between them can cause this code. Id highly reccomend getting the updated vent kit from GM. Part # 19207762.
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9933769
04/24/14 06:19 PM
|
Joined: Jul 2004
Posts: 5,363
Alex K.
TFF Celebrity
|
|
TFF Celebrity
Joined: Jul 2004
Posts: 5,363 |
Also, with the key on, wiggle and move the connector and if it clicks you need a new pigtail connector. There is a possibility you could have a faulty Fuel Tank Pressure sensor, but 95% of the time an AC Delco vent/solenoid kit cures that code.
|
|
|
Re: Chevrolet P0446 code
[Re: Alex K.]
#9934278
04/24/14 09:33 PM
|
Joined: Jun 2005
Posts: 7,206
adam_p
OP
TFF Celebrity
|
|
OP
TFF Celebrity
Joined: Jun 2005
Posts: 7,206 |
At the vent solenoid, check for 12v on the orange wire with the key on. If you've got power on that wire, backprobe theother wire (white) to ground and listen for an audible click from the solenoid. If you hear it click, its probably working. check the hose between it and the Charcoal canister for dirt. Id also remov the canister and see if alot of dirt/dust comes out of it. If there is dirt in the canister, replace it. A clogged vent, canister, or line between them can cause this code. Id highly reccomend getting the updated vent kit from GM. Part # 19207762. Also, with the key on, wiggle and move the connector and if it clicks you need a new pigtail connector. There is a possibility you could have a faulty Fuel Tank Pressure sensor, but 95% of the time an AC Delco vent/solenoid kit cures that code. That helps a lot. Thanks.
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9935207
04/25/14 07:11 AM
|
Joined: Apr 2014
Posts: 44
Skeeterzx21
Outdoorsman
|
|
Outdoorsman
Joined: Apr 2014
Posts: 44 |
(4)Rollover Valve/Fuel Tank Pressure (FTP) Sensor
What you got was the "range" seen by the computer is something which usually or should not ever happen. The (Fuel sensor) is seeing it as if you were to have 30 gallons (full) in a 20 gallon gas tank, impossible. The fuel sensor is telling the computer there were 30 gallons in the tank or (minus 10 gallons) in the tank. Impossible situation! The fuel sensor is bad.
Last edited by Skeeterzx21; 04/25/14 07:18 AM.
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9941202
04/27/14 11:56 PM
|
Joined: Jul 2004
Posts: 5,363
Alex K.
TFF Celebrity
|
|
TFF Celebrity
Joined: Jul 2004
Posts: 5,363 |
At the vent solenoid, check for 12v on the orange wire with the key on. If you've got power on that wire, backprobe theother wire (white) to ground and listen for an audible click from the solenoid. If you hear it click, its probably working. check the hose between it and the Charcoal canister for dirt. Id also remov the canister and see if alot of dirt/dust comes out of it. If there is dirt in the canister, replace it. A clogged vent, canister, or line between them can cause this code. Id highly reccomend getting the updated vent kit from GM. Part # 19207762. Also, with the key on, wiggle and move the connector and if it clicks you need a new pigtail connector. There is a possibility you could have a faulty Fuel Tank Pressure sensor, but 95% of the time an AC Delco vent/solenoid kit cures that code. That helps a lot. Thanks. Anytime. 
|
|
|
Re: Chevrolet P0446 code
[Re: adam_p]
#9942832
04/28/14 04:14 PM
|
Joined: Sep 2005
Posts: 238
aggie-01
Outdoorsman
|
|
Outdoorsman
Joined: Sep 2005
Posts: 238 |
I have the same truck and it happened to mine. It had about 90,000 miles on it. I replaced the canister and solenoid below the gas cap. When you go to the dealer the relocation part was expensive. They don't sell the exact replacement part. They only sell the relocation part. The suburban is the exact same part and about $30.00 if I remember correctly. So put the suburban part in and if it goes out replace it again and still cheaper than relocating it.
Mitch
|
|
Moderated by banker-always fishing, chickenman, Derek 🐝, Duck_Hunter, Fish Killer, J-2, Jacob, Jons3825, JustWingem, Nocona Brian, Toon-Troller, Uncle Zeek, Weekender1
|
