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

100,275

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

1,470

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.

100,275

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
    970
  • #2
    Tom Demyan
    Reputation
    800
  • #3
    John Pate
    Reputation
    540
View All

Related Models For Sale

Used Buick Regal
4 Great Deals out of 304 listings starting at $9,495
Used Buick LeSabre
14 listings starting at $1,400
Used Chevrolet Impala
96 Great Deals out of 994 listings starting at $2,000
Used Honda Accord
74 Great Deals out of 1,084 listings starting at $1,200
Used Chevrolet Malibu
80 Great Deals out of 2,191 listings starting at $2,994
Used Toyota Camry
54 Great Deals out of 1,905 listings starting at $1,688
Used Honda Civic
309 Great Deals out of 3,481 listings starting at $995
Used Ford Mustang
7 Great Deals out of 1,156 listings starting at $2,999
Used Toyota Corolla
171 Great Deals out of 3,638 listings starting at $2,245
Used Ford F-150
448 Great Deals out of 10,155 listings starting at $1,400

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.