DTC Description

C181A-00 is set when CAN Communication is normal, but AAF ("ACTIVE AIR FLAP") cannot transmit P_CAN message to "GATEWAY" for 10 sec.

If the DTC still appears even if the problem is corrected and the system operates normally, perform "Erase Network Configuration" procedure in the "Vehicle S/W Management"  with GDS and erase the DTC.