How long must I drive after new battery and gas cap to pass smog test?

Asked by Apr 04, 2017 at 01:20 AM about the 2004 Toyota Camry CE

Question type: Maintenance & Repair

I recently relocated my 2004 Toyota Camry from California to Nevada. In
order to register my car in Nevada, it was necessary to pass a smog
inspection. I took my car to Firestone and did not pass. I later learned that
my car failed the smog test because I just installed a new battery and need
to drive the car for approximately 100 miles for the computer to calibrate. I
followed the advice of several YouTube videos and drove the car about 150
miles. On the very day I planned to retake the smog inspection, my check
engine light came on. I took the car to AutoZone because they offer a free
check engine light inspection. AutoZone said that I needed a new gas cap.
I checked my gas cap and the seal was cracked. Before purchasing from
AutoZone, I searched online reviews - two Camry owners said the same
thing happened to them, but the gas cap from AutoZone did not work. Both
guys replaced the AutoZone cap with an OEM Delco cap and the engine
light went off and stayed off.

When I returned to AutoZone to buy the cap, I requested an OEM cap and
explained why. The AutoZone guy informed me that they do not carry OEM
caps and that I would have to purchase an OEM from a Toyota dealership.
The AZ guy added that the only reason the other guy’s caps did not work
was because it was necessary to drive the car 60 miles before the check
engine light would turn off.
That said, I went ahead and purchased the “stock” cap from AutoZone,
drove over 75 miles and this did not remedy the situation. I eventually
purchased an OEM cap, but my engine light is still on. I haven’t driven 60
miles yet, but I am starting to wonder if I should reset the engine light by
disconnecting the battery. If I do, I will have to start all over with
recalibrating the computer. I only have 7 days left on my temporary moving
permit and won’t be allowed another extension at the $2 for 10-days rate.
My next temp moving permit will cost me $9 per day – yikes!
I am looking for some seriously sound advice on the best course of action.

5 Answers


dont remove power from the system...should be close to reset..some take much more time and miles...they like a steady 15 mile trip..have the codes rescanned again cant hurt


It depends from just a few miles to 50. Sometimes more. There is a procedure for this on the internet how to drive the car to make it ready for the smog


Also, you coild post the error code. The guys at autozone are just sellers and maybe offer a hint, but are not certified techs. I think he just read the code and offered the usual solution or the easiest. By any chance did you filled the tank before this error occured? Maybe try to reset tne error, but this means you have to drive it some more to make it smoke check ready.


you need to know what the code is , you've already learned not to buy cheap parts , the gas cap may well have solved the one code but a different one may be up now , you don't know , then there's the "smog test " which I understand as the actual testing (sniffing )of the exhaust which is separate from when codes have been purged from the ECM. First get the codes cleared then the exhaust can be checked .The catalytic converter takes care of a majority of pollutants . Let us know what happens .


If that code does not clear up driving a 100 miles or more, you have a small EVAP leak, and a smoke test would need to be performed to find it. I'd quit messing around with the gas cap and get it into a good shop to have the EVAP system checked out. But you probably should drive it a bit more to see if the gas cap was the problem. When codes are set, and you get them repaired and cleared there is a minimum amount of miles you need to drive the vehicle, usually over 100 miles. When the car goes to inspection, their scanner can tell when the last time in miles when the codes were cleared, and tell you to come back if the required miles have not ben driven. So you need to getter fixed.

Your Answer


Looking for a Used Camry in your area?

CarGurus has 71,592 nationwide Camry listings starting at $175.


Toyota Camry Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Honda Accord
529 Great Deals out of 93,656 listings starting at $1,495
Used Toyota Corolla
644 Great Deals out of 66,145 listings starting at $1,599
Used Honda Civic
341 Great Deals out of 52,141 listings starting at $1,200
Used Nissan Altima
749 Great Deals out of 67,282 listings starting at $750
Used Toyota Avalon
160 Great Deals out of 9,580 listings starting at $1,995
Used Toyota RAV4
483 Great Deals out of 67,002 listings starting at $1,995
Used Nissan Maxima
234 Great Deals out of 17,856 listings starting at $1,995
Used Hyundai Sonata
397 Great Deals out of 50,392 listings starting at $990
Used Toyota Highlander
443 Great Deals out of 44,503 listings starting at $1,750
Used Honda CR-V
541 Great Deals out of 67,089 listings starting at $1,800
Used Chevrolet Malibu
604 Great Deals out of 48,316 listings starting at $1,800
Used Toyota Tacoma
431 Great Deals out of 40,775 listings starting at $2,600
Used Toyota 4Runner
299 Great Deals out of 30,520 listings starting at $2,995
Used Toyota Prius
209 Great Deals out of 16,113 listings starting at $900

Used Cars For Sale

2018 Toyota Camry For Sale
13 Great Deals out of 37,189 listings starting at $17,907
2017 Toyota Camry For Sale
124 Great Deals out of 5,966 listings starting at $11,299
2016 Toyota Camry For Sale
98 Great Deals out of 5,091 listings starting at $9,950
2015 Toyota Camry For Sale
203 Great Deals out of 7,593 listings starting at $8,500
2014 Toyota Camry For Sale
130 Great Deals out of 3,309 listings starting at $7,999

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.