It is in direct relation to how far you are from a gas station and / or mechanic. And when you do see a mechanic it will turn off.
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You have a problem that is effecting the emissions controls. Take it to a qualified technician for repair.
If the CEL is not flashing-it's probably ok to drive. If the CEL is flahing - it's probably not ok.
it is on because the ECU has detected a problem with the emissions system.
How do you remove the brake light cover on a ford focus
About 20 +/-.
light sensor
because you have an emmissions problem
That is the check engine light. It stays on when the computer has detected an emissions related failure.
The Check Engine Light has nothing to do with oil changes. It is on because there is a problem with the emissions system.
If you are speaking of the orange light with the outline of the engine - - It is associated with the engine emissions control system. It most commonly lights up when the gasoline filler cap has been left loose (or replaced with the wrong cap) - or the PCV valve needs replacing. After checking or replacing those two items - steady driving of about 1/2 hour or more should re-set the light. If not, you need to see a mechanic for other possible problems.
Emissions related or a misfire. Get the codes read with a scanner.
From the inside, behind the panels.