Mode 3

Data Output With A Scan Tool

The output of data relevant to OBD from the control modules was stipulated by law for the USA. It is described in SAE J 1979.

Data output is subdivided into different modes.

Mode 3
Output of stored faults.

Mode 3
Output of stored faults.

The Diagnostic Trouble Codes of all shedded, officially relevant* faults are displayed in Mode 3.

* Faults which switch on the Check Engine warning light