Complex sentence: The only available function for the owner is "Blinky Codes" that transmit the Diagnostic Trouble Code (DTC) with the blinking pattern of the "Check Engine" (MIL) light.
Split into simpler sentences: The only available function for the owner is "Blinky Codes". The Diagnostic Trouble Codes (DTC's) can be interpreted through the blinking pattern of the "Check Engine" (MIL) light.