OBD Health Check

The OBD Health Check option is intended as a time-saver, allowing you to quickly access a few key global OBD-II services.

The OBD Health Check menu (options include the following (descriptions are provided in the following sections):

● Check global diagnostic trouble codes (DTCs)
● Clear global diagnostic trouble codes (DTCs)
● Check readiness monitors, see Readiness Monitors
● Check MIL Status, MIL Status

Global OBD II Code Check displays any stored emission related generic DTCs reported by the ECM.

Two menu options are available:

Codes displays a list of current emission related DTCs. OBD-II/EOBD Codes have a priority according to their emission severity, with higher priority codes overwriting lower priority codes. The priority of the code determines the illumination of the MIL and the code erase procedure. Manufacturers rank codes differently, so expect to see differences between makes.

Pending Codes

Pending Codes enables the scan tool to obtain “pending” or maturing diagnostic trouble codes. These are codes whose setting conditions were met during the last drive cycle, but need to be met on two or more consecutive drive cycles before the DTC actually sets.

The intended use of this service is to assist after vehicle repair and after clearing diagnostic information, by reporting test results after a single driving cycle.

● If a test failed during the driving cycle, the DTC associated with that test is reported. If the pending fault does not occur again within 40 to 80 warm-up cycles, the fault is automatically cleared from memory.
● Test results reported by this service do not necessarily indicate a faulty component or system. If test results indicate another failure after additional driving, then a DTC is set to indicate a faulty component or system, and the MIL is illuminated.

Global OBD II Clear Codes clears all emission related diagnostic data such as, DTC records, freeze frame data, and test results, from ECM memory. Although OBD Direct only displays generic OBD‑II data, clearing codes erases all of the stored data including any enhanced codes.

A confirmation screen displays when the clear codes option is selected to prevent accidental loss of data. Select Yes on the confirmation screen to continue.