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DTC 01-DD: Master Reset; DTC 01-E1: Voice Processing Device ON Error: Description

DTC No.	DTC Detection Condition	Trouble Area
01-DD *1	The device that should be the master has been disconnected after the engine starts.	Radio receiver assembly power source circuit AVC-LAN circuit between the radio receiver assembly and component which has stored this code Radio receiver assembly Component which has stored this code
01-E1 *2	The AMP device stores that the AMP output does not function even while the source device operates.

HINT:

*1: If the ignition switch is turned off after idling for 60 seconds, this DTC may be stored when the engine is started again.

*2: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.

NOTE:

Before starting troubleshooting, be sure to clear the DTCs stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
The radio receiver assembly is the master unit.
Be sure to clear and recheck for DTCs after the inspection is completed to confirm that no DTCs are output.