DTC Display Order

In the diagnostic mode, diagnostic trouble codes (DTCs) are displayed in numerical order. The first DTC displayed is always DTC 12, followed by any current DTCs (21 to 24) or any history DTCs (31 to 34). Remote control door lock transmitter diagnostic DTCs (41 to 45) will then be displayed if activated while in the diagnostic mode. The last DTC displayed is the begin configuration display (55). The first number following DTC 55 is the hardware configuration. The second number is the software configuration. DTC 55 and the 2 configuration numbers are always displayed. After the configuration numbers are displayed, the entire list is repeated beginning with DTC 12. System faults are stored as current or history DTCs. When working on systems controlled by the body control module, always refer to this section and test for DTCs.