OBD aftermarket Market is a term used to describe the growing industry of companies that offer OBD-related products and services. These products and services can include anything from OBD scanners and software to OBD-related repairs and diagnostics. The OBD aftermarket is a rapidly growing industry, due in part to the increasing popularity of OBD-equipped vehicles. As more and more people become aware of the benefits of OBD-equipped vehicles, the demand for OBD products and services is expected to continue to grow.