Why is my 2007 Ford Ranger engine light on?

When the engine light turns on in Your 2007 Ford Ranger the first thing You should do is stop driving as soon as possible. The check engine light turns on when there is a fault detected with Your truck and if You continue to drive You may harm some components. The next thing that You should do is use an OBD II scan tool on Your truck when You have stopped. This will let You read the codes that are stored in the ECU. There are hundreds of reasons that Your check engine light can turn on in Your truck and the only way to determine what has gone wrong is check the ECU to determine what codes have been thrown.