My brother has a 2003 buick century 3.1 he is getting code p0446, he has changed the evap canister valve, charcoal canister vent valve, pcv valve and the rubber on the gas cap and the code will not go away. Do you have any idea of what else it could be, he is saying there is no gas leak.

Asked by May 24, 2017 at 10:18 AM about the 2003 Buick Century Base

Question type: Maintenance & Repair

5 Answers

98,365

Did he clear the code and then do a drive cycle? It usually takes 20 minutes.

1,390

Also try removing the battery cable...that will reset some of the codes

he did clear the codes and drive the car and they came back on. he also removed the battery cable.

98,365

Then he will most likely need a smoke test ran on the fuel tanks purge system to locate the problem, or he has wiring problems.

ok, thank you for your help.

Your Answer

Century

Looking for a Used Century in your area?

CarGurus has 18 nationwide Century listings and the tools to find you a great deal.

Postal Code:

Buick Century Experts

  • #1
    John Saffrahn
    Reputation
    960
  • #2
    Tom Demyan
    Reputation
    790
  • #3
    John Pate
    Reputation
    530
View All

Related Models For Sale

Used Buick LeSabre
14 listings starting at $2,500
Used Buick Regal
328 listings starting at $9,495
Used Chevrolet Impala
58 Great Deals out of 930 listings starting at $1,900
Used Toyota Camry
43 Great Deals out of 1,599 listings starting at $1,700
Used Buick Park Avenue
3 listings starting at $1,980
Used Chevrolet Malibu
109 Great Deals out of 2,275 listings starting at $2,500
Used Honda Accord
67 Great Deals out of 1,127 listings starting at $748
Used Chevrolet Tahoe
7 Great Deals out of 619 listings starting at $6,871
Used Toyota Corolla
155 Great Deals out of 3,430 listings starting at $2,500
Used Ford Taurus
23 Great Deals out of 309 listings starting at $4,900
Used Pontiac Grand Prix
5 Great Deals out of 85 listings starting at $1,800
Used Ford Focus
130 Great Deals out of 2,591 listings starting at $750

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.