On a 1995 Buick, will a bad or loose gas cap cause the O2 sensor to come on.?

Answer 1

If you mean will it trigger a check engine light, yes, it will. The error code will be fuel evaporative system error of some kind since a bad cap will not allow the tank to pressure up as it should. Often times just tightening the cap will turn off the light. The O² sensor doesn't "come on" because it is merely a passive sensor that sends information to the computer.

Answer 2

in simple terms had my CEL mild come on for the first time. Code suggested I had a small leak someplace. My gasoline cap replaced into free, tried to tight it, couldn't accomplish that so I make investments in $10 were given a sparkling gasoline cap and it snuggly suits in air tight. I cleared the code and hoping it doesn't illuminate, if it does the gasoline cap isn't in fault. For any automobile proprietor who won't be able to have the funds for a small purchase of a gasoline cap to fix this difficulty should not be using a automobile. be conscious of its a ambitious statement, yet imagine about the accountability element.

Answer 3

NO is correct answer,oxygen censor is air to exhaust not gas or gas cap.gas cap keeps debree from entering tank and to keep gas in tank on take off and turns,and is vented to let air in tank as gas is being sucked out.

Answer 4

the correct answer is both 'dwh12345' & 'SVOMAN'.
In GA they have an emissions test that includes testing if the gas cap can hold the pressure.

Answer 5

Gas tanks need to be pressurized to work properly..No cap..No pressure

Answer 6

yes as stupid as it sound yes,, it even happens with 200 vw jetta only the engine light comes on ? darn retarded making people think thier cars are more messed up my friends gass cap was missing and her jetta did the same thing

Answer 7

no, it won't trigger a oxygen sensor, but will trip the engine light

Answer 8

Yes. Seen it happen.