Reading OBD codes requires an OBD scanner, which can cost between $30 and $60. It’s a handheld tool with a 16-pin trapezoidal connector that plugs into the vehicle and interprets the OBD code.

We'll explain how to use an OBDII code reader to clear Cummins fault codes, and we'll also explain how to clear the codes if you don't have access to a scan tool.

These codes, known as OBD or OBD-II codes, are the key to diagnosing your issue. To read your OBD codes, you’ll first need to obtain an OBD scanner, a handheld device with a 16-pin plug that connects ...

A scanner plugs into this connector. GM designed these pre-OBD-II systems to allow mechanics to read trouble codes without a scan tool.

Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.

The OBD (On-Board Diagnosis) system in your Toyota Corolla will enable you to see what’s wrong with it without going to the service if you choose the low-budget DIY way.