At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
I have had this repaired numerous time. Everytime the test is run the
problem is with the gas cap. I have tried a new gas cap. Within 50
miles of having the light rest it comes on again. Sometimes it comes on
before I get home form the mechanic. I have it reset everytime I have
my oil changed. In Georgia with have emissions check every year. My car will not pass with this light on. Can you tell me how to reset it so that I don't have to continue paying $70 to have the test run?
Unfortunately the only way to reset that light is with a computer scanner. Autozone usually gives free diagnostics but I don't think they can turn off your light. Sounds like you need to have someone put a smoke machine on your vehicle to find the leak in your evap system. Hope this helps.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The "gas cap light" actually does not mean the gas cap is loose or defective.It is telling you there is a leak in the fuel system somewhere,usually a vapor line or stuck or defective valve.Not very often is it the gas cap that causes the light to come on.Time for a scan and a smoke test to fine the leak.
The gas cap light is a generic light that indicates an emission problem. Usually a vacuum/pressure leak within the system. The gas cap is usually the first thing to check, however may not be the problem. There are numerous sensors and lines that control the vacuum/pressure/ of the fuel vapors and one of these is loose/disconnected/defective causing this light to come on. I would recommend inspecting hoses under the hood for any that may be loose/disconnected. You may also require a scan test to view sensor data to isolate the source of the light
Is the check engine light on ? Have you tried running it with the gas cap off ? The vent for the tank could be faulty. If you run it with the gas cap off, the check engine light may come on.
if the gas cap is installed properly(tightened),then you could have a code in the computer for the evap system that should be checked into.you will have to know what the code is to find what area of the system that needs to be checked out.
computer is seeing a large evap leak. most common cause is gas cap left loose this is why it is throwing up that message. since you have already done that we know there is a leak somewhere else. look underr vehicle and should see a black rectangular box close to gas tank this is the evap canister check the lines hooked to this and just do a visual inspection of hoses see if one has come off. may need to have it checked out we have a machine that hooks into system and pressurizes with "smoke" the smoke leaks out of the problem area and helps diagnose .
I don't know for sure, but I suspect the gas cap seal is leaking. Check the gas cap seal and mating surface for dirt. Buying a new cap might also be an option if you want to try that.
By having it scanned and cleared with an OBD tool. This light comes on when it detects a problem. Could be a bad gas cap, or it could be a misfiring engine. The code you get from having it scanned will pinpoint the trouble area
Thank you
×