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P0446 fixed.

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Old 02-05-2012, 08:09 AM   #1
crainholio [OP] crainholio is offline
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P0446 fixed.

Check Engine light came on last week, I had it scanned at AutoZone and P0446 Evap System was the code.

I removed my gas cap, cleaned the O-ring seal and the filler surface, and had the guy clear the code. The CE light came back on the next morning.

I crawled under the truck and inspected the hoses at the carbon canister, nothing wrong and no visible cracks in the canister itself.

The local dealer had a new gas cap in stock, so I grabbed it. Couldn't see anything wrong w/ my old cap, no cracks in the O-ring, but figured it was worth a shot. Sure enough, after installing it and re-clearing the error code it hasn't come back in the 30 miles I've driven.

Hope this helps somebody!
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Old 02-06-2012, 03:58 PM   #2
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I had something similar but the gas cap worked for only a short time. Had to replace my EVAP VSV. It was awhile ago however and can't remember the exact code....but I do believe it was the 446. The 442 are the most common codes I get into my shop which is almost always been a loose gas cap in my past experience.
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Old 04-09-2012, 03:01 PM   #3
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Quote:
Originally Posted by crainholio View Post
Check Engine light came on last week, I had it scanned at AutoZone and P0446 Evap System was the code.

I removed my gas cap, cleaned the O-ring seal and the filler surface, and had the guy clear the code. The CE light came back on the next morning.

I crawled under the truck and inspected the hoses at the carbon canister, nothing wrong and no visible cracks in the canister itself.

The local dealer had a new gas cap in stock, so I grabbed it. Couldn't see anything wrong w/ my old cap, no cracks in the O-ring, but figured it was worth a shot. Sure enough, after installing it and re-clearing the error code it hasn't come back in the 30 miles I've driven.

Hope this helps somebody!
Had the exact same problem. I got a new gas cap at walmart last week and just unhooked the battery today. No more cel.
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