Help please P0446

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02-03-2016, 05:50 PM

montess1

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Join Date: Apr 2013

Posts: 9

Help please P0446

Does any one know to trouble shoot this code. The car is a 06 monte ss. I looked at the cap and the vent valve in the rear fender well and all looks good. Thanks!

02-03-2016, 06:11 PM

owens91

Monte Of The Month -- October 2014

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EVAP Emission Control System Vent Circuit Malf. , check evap vent solenoid, maybe new gas cap for starters?

02-03-2016, 08:04 PM

montess1

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Join Date: Apr 2013

Posts: 9

I pulled the vent solenoid and tested it with 12 volts and it closed like it should. I will try a new cap and see if it sets the same code,thanks!

02-06-2016, 10:50 AM

montess1

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Join Date: Apr 2013

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I put on a new cap but I need a few drive cycles on it now for it to reset. How long does a drive cycle take ?

02-06-2016, 03:39 PM

owens91

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Quote:

Originally Posted by montess1

I put on a new cap but I need a few drive cycles on it now for it to reset. How long does a drive cycle take ?

some say drive on the highway for 10 miles...thats what they say when its time for inspection, but honestly im not sure

02-07-2016, 12:37 PM

montess1

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Join Date: Apr 2013

Posts: 9

Well the cap did not fix it, mil back on and same code again. I guess maybe I will get a vent solenoid next.

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