Either the bulb is bad or a previous owner disconnected it because it would not go out with the vehicle running.
hOW DO YOU GET TO THE BULB??
If an check engine light does not come on it is a good thing. When your check engine light comes on, it means you need service done on your vehicle.
Reasons the service engine light does not come on: The bulb is burned out. I would suspect this first. There is a wiring problem. The engine control module is bad.
No.
The check engine/service engine light should come on as soon as the ignition is turned to the on position without starting the engine. If it does not, then the bulb is either blown or has been removed.
yes
The service engine light has to be reset with a scanner. Disconnecting the battery will not work. The light will come back on unless you make the necessary repairs.
The service engine light is the same thing as a check engine light.
Ambient temperature Should have no effect on Service engine light Have vehicle scanned to determine the problem
Yes, it may cause a miss that will trigger the check engine light.
Could be a wiring issue or a completely different problem.
That is one of many possible causes.
Yes it can.