It can be almost immediate depending on which monitor. The amount and specific monitors vary between autos. Some monitors will not run if there is a different monitor that fails. Typically, there is a drive cycle that must be performed for all of the monitors to set. This also varies from car to car. In most instances the cooling system and fuel temperature must be ambient or the same before beginning. Unless your car has a fuel temperature sensor, the drive cycle must start from a cold start. This can be a tough operation to perform and complete due to other traffic or speed limits or signals. If you are unable to follow it, all the monitors do not reset.
Cars and trucks 1996 and newer are OBD2. You must run the OBD2 drive cycle yo reset the readiness monitors. The drive cycle varies among manufactures. Some garages can give you a print out of what you need to do. Keep running it, take it on the interstate and through town, some cars take a few hundred miles to set the monitors. Load up the family or take some friends and go on a road trip might as well have fun while resetting the computer.
It should reset right away.
Buy yourself an OBD2 scanner and you can turn off the light whenever you want whenever it comes on and you can see why it has been turned on....or take it to a mechanic and have him use the same technique, ( if you know a mechanic yourself he might just have an OBD2 scanner or find someone with one
It should eventually go out, after a few driving cycles, but may not. You should have reset the computer with a OBD2 scan tool after replacing the O2 sensor. Now, if the O2 sensor is not the problem, the light will not go out and even after you reset it then it will just come back on.
Never it stays in forever
50 miles or more
How long does it take for the computer to reset on VW jetta after service of engine light problem. Won't pass smog drove 130 miles has not reset?
To reset an iPod 5th generation to factory settings usually takes around 1 hour.
every time i do it, it takes hours...they suck
3 months reset was sound stage
It usually takes about 4 minutes from start to finish.
It takes 10 to 13 years