DTC Detection Logic

NOTE: If DTC U1024 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to "DTC LOGIC ".

DTC No.	Trouble diagnosis name (Trouble diagnosis content)	DTC detecting condition	Possible cause
U1024	VVEL CAN COMM CIRCUIT (VVEL CAN communication)	When VVEL control module cannot transmitting or receiving CAN communication signal with ECM for 2 seconds or more. When detecting error during the initial diagnosis of CAN controller of VVEL control module.	Harness or connectors (CAN communication line is open or shorted) ECM VVEL control module