Chances are, you may have encountered the ‘O/D Off’ light appearing in the instrument cluster of your car, or in the very rare cases, the ‘O/D Off’ light flashing multiple times. Even among well-seasoned car owners, attempting to identify what this means with regard to the vehicle may confuse most people – some of whom may be alarmed that something is seriously wrong with the car itself. But the truth is, the ‘O/D Off’ light is nothing to be alarmed about. In fact, the light is tied to a specific function equipped with some automatic transmissions known as ‘Overdrive’ (commonly abbreviated as O/D). It may sound quite exciting, but Overdrive is simply a way by which older automatic transmissions could be more efficient, despite being limited by their minimal number of gears.
