passing smog test

Asked by GuruK5F9J Dec 02, 2019 at 05:41 PM about the 2002 Ford Thunderbird

Question type: Maintenance & Repair

How do I reset the sensor for the catalytic converters so the car will pass smog.  
They were replaced less than 2 years ago and 6 months ago the battery was
replaced.  There is no code coming up.

2 Answers


Drive the vehicle normally for a few days with the gas gauge between three quarters and one quarter. This will allow the computer to run the diagnostic tests on all the systems and set the readiness monitors so you'll pass inspection. Under Federal Law you will pass inspection with one of the readiness monitors not set. It doesn't matter which one is not set as long as the others are all set. Your check engine light or service engine soon light must not be on either. If you have a check engine light on that must be fixed before you clear the computer and drive to reset the readiness monitors. Hope that helps! Jim

1 people found this helpful.

Right, a 2002 has a drive time protocol that must be met before you can attempt smog testing. This usually takes 20 minutes of normal driving, you must not stop the engine until 20 minutes have passed or you will have to start all over again, if the check engine light turns on during that time the drive time protocol will stop and the code or codes will have to be fixed before attempting another drive time protocol.

2 people found this helpful.

Your Answer:

CarGurus Experts

  • #1
    Larry Sturgis
  • #2
    G A Arne
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Ford Mustang
27 Great Deals out of 1,050 listings starting at $4,652
Used Chevrolet Corvette
24 Great Deals out of 434 listings starting at $17,995
Used Chevrolet Camaro
29 Great Deals out of 369 listings starting at $9,990
Used Ford F-150
147 Great Deals out of 5,730 listings starting at $2,995
Used Volkswagen Beetle
4 Great Deals out of 136 listings starting at $2,999
Used Pontiac Firebird
16 listings
Used Mazda MX-5 Miata
56 listings starting at $7,995
Used Mercury Cougar
3 listings
Used Mercedes-Benz SL-Class
74 listings starting at $15,999
Used Porsche 911
8 Great Deals out of 135 listings starting at $24,800

Used Cars for Sale

2003 Ford Thunderbird For Sale
2 listings starting at $25,900
2002 Ford Thunderbird For Sale
11 listings starting at $16,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.