A Hyundai's "check engine" light comes on when the onboard diagnostic system detects a problem that can effect the way the engine runs. The "check engine" light has a code associated with it explaining why the light came... More »

The check engine light on a Ford Ranger, or any other vehicle, can indicate a variety of problems, ranging from a loose gas cap to a faulty catalytic converter. Occasionally, the check engine light comes on because of a ... More »

A check engine light on a Ford Explorer sometimes indicates a simple problem, such as a gas cap that needs tightening, or something more complex and expensive, such as a bad catalytic converter. It often requires a trip ... More »

The traction control sensor light comes on in a 2006 Hyundai when there is a problem with the traction control system. This system helps the vehicle get to a safe position when sliding on wet or icy pavement. More »

The airbag light, also called the supplemental restraint system light, turns on when there is a problem with one of the components of the safety system. It warns the driver that the safety system needs to be inspected as... More »

The check engine light illuminates on a Mazda to indicate the powertrain control module has detected a problem in the engine or transmission of the vehicle. The powertrain control module is a computer that manages the ve... More »

The "service engine soon" light on a Dodge Grand Caravan indicates a problem in the engine or emissions sensors. Before bringing the vehicle in for service, the owner should check for a loose or missing gas cap. AllPar e... More »