Prius Check EMV

It’s nothing that can help you with anything. I’m guessing you got the codes from the MFD?

 

Who told you those codes were error codes? I believe they are codes for the entertainment system, not error codes. Do you have warning lights on?

 

As @Skibob kindly points out, these are diagnostic trouble codes (DTCs) for the audio or navigation system. The Repair Manual (more info) explains how to decode them.

Logical address: 01 (Communication control)
DTC: DC (Failure in transmission)
Sub code: 190 (Radio receiver assy)
Connection check number: 17
Occurrences: 2

“DS” isn’t a valid code; it should be a hexadecimal number. I’m assuming this was really D5.

Logical address: 01 (Communication control)
DTC: D5 (Absence of registration unit)
Sub code: 190 (Radio receiver assy)
Connection check number: 38
Occurrences: D (13)

Logical address: 01 (Communication control)
DTC: DB (Mode status error)
Sub code: 190 (Radio receiver assy)
Connection check number: 2C
Occurrences: F (16)

If these are codes from the EMV (multi-display) page, they indicate a possible communication problem between the multi-display and the radio receiver assembly. The Repair Manual suggests to check the power source circuit for the radio receiver assembly; to check the AVC-LAN circuit between the multi-display and the radio receiver assembly; and if no trouble is found with either circuit, to replace the radio receiver assembly.

Obviously, those diagnostic steps would be useful only for a problem with the audio or navigation systems. For problems with other systems on the car, you’ll need to use a Toyota Techstream diagnostic system or equivalent, connected to the DLC3 (OBD II) connector, to check for DTCs.