Error Code P0446 2001 Tahoe - Chevrolet Forum - Chevy Enthusiasts Forums

Go Back   Chevrolet Forum - Chevy Enthusiasts Forums > Current Chevy Trucks, SUV's, Crossovers & Vans > Tahoe & Suburban
Log In 

Tahoe & Suburban The power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.

2013 Chevrolet Suburban
Platform: GMT 400, 800, 900
Sponsored by: Dorman

LinkBack Thread Tools Search this Thread
Old 04-06-2009, 06:56 PM
Junior Member
Join Date: Apr 2009
Posts: 1
Default Error Code P0446 2001 Tahoe

2001 Chevy 4X4 5.3L Tahoe with 200K miles

check engine light is on,autozone says code is P0446. This is what their ticket says:

The PCM has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.

EVAP (Evaporative Emission System) purge/vent solenoid circuit condition

The solenoids and system wiring are monitored for opens or shorts

Probable Causes
1- Purge or vent solenoids defective
2- Check connevtor and wiring
3- Fuel saturated vapor canister
4- Failed EVAP vent solenoid

If the Vent solenoid is defective, what effects would this cause to the motor? Could it cause the motor to miss at low RPM?

Any info and help is appreciated.

Thank you in advance for your help!
Reply With Quote
Old 04-07-2009, 06:53 AM
in2pro's Avatar
Join Date: Apr 2008
Location: Austin, Texas
Posts: 7,094

Welcome to the forum

To the best of my knowledge the evap system witch is an emissions system should not affect drive ability, at least not in the sense of a miss or rough idle, the EGR which is also emissions could cause a rough idle.
With that many miles I would suspect fuel delivery / ignition
Looking to advertise in the forum? click here > Internet Brands
Reply With Quote
Old 04-08-2009, 10:32 AM
73shark's Avatar
Join Date: Apr 2006
Location: KC, MO area
Posts: 8,777

Welcome to the Tahoe forum. Remember that DTCs just point to an area of a problem and usually require further troubleshooting to determine the underlying cause.
2010 Sheer Silver Tahoe LTZ (all options but sunroof, power boards), GM (body color flaps, rear console, 3rd row mat, 2-Way Remote, chrome gas door, Esky rack), Eagle Eye LED tails, SLP dual tip exhaust, Silver bow-ties/rear wiper, Catch-All mats, AlphaTherm washer fluid heater, Putco chrome mirror covers, silver calipers, board chrome trim, tint, GMPP Major Guard

2007 Black Tahoe LTZ (Sold)
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
P0446 Code on 2000 Chevy Malibu Help? kobe3006 Malibu 1 05-08-2014 04:06 PM
P0446 code on a 2006 cobalt samster35 Cobalt 3 04-10-2013 10:33 PM
04' Tahoe, P0446 Code, Losing Fuel Pressure, Fuel Smell Aaron@Airlift Tahoe & Suburban 0 08-02-2012 09:33 AM
P0446 Code cost Concours98 Silverado & Fullsize Pick-ups 0 04-10-2012 03:23 PM
P0446 Code, EVAP Vent valve arminkropp Uplander 11 04-01-2010 10:57 PM

2000, blazer, chevrolet, chevy, code, error, evap, impala, malibu, p0446, po446, silverado, solanoid, solenoid, vent

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


All times are GMT -5. The time now is 08:33 AM.