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OBD-II/EOBD OBD-II/EOBD Menu
4.2.1 OBD Health Check
The OBD-II Health Check offers a way to quickly check for and clear emissions-related diagnostic
trouble codes (DTCs), and to check readiness monitors for emissions testing. Selecting opens a
connection message. Select Continue or press the Y/a button to open a submenu of test options
(Figure 4-1).
Figure 4-1 OBD Health Check menu
Global OBD II Code Check
Global OBDII Code Check displays stored emission related generic DTCs reported by the ECM.
Selecting opens a submenu with two choices: Codes and Pending Codes. Either option opens a
code list (Figure 4-2).
Figure 4-2 Code list
Codes
The Codes option displays a list of current emission related DTCs.
OBD-II/EOBD Codes have a priority according to their emission severity. The priority of the code
determines the illumination of the MIL and the code erase procedure. Vehicle manufacturers have
implemented the ranking differently, so there are differences between makes.
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