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Picture this: you are driving along when, out of the blue, your car’s transmission starts acting up. The “check engine” light comes on, telling you that there is a problem. At the same time, your car’s transmission automatically shifts into second or third gear and stays there. Limited to one gear and 30-45 mph, you know there is a  serious problem with your car’s transmission  and you have to get your car to either your dealer or transmission repair shop to have the problem diagnosed and repaired. Naturally, the first questions that go through your head are: Why did this happen? How severe is it? and  How much will it cost to fix? In This Guide What Causes Limp Mode? Limp Mode’s Protective Actions Example Situation How the Computer Determines That a Sensor is Incorrect What You Should Do Questions to Ask Yourself What Causes Limp Mode? Since the early 1980s, computers have been responsible for monitoring and controlling systems in automobiles. At fir...