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

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
01-DD (*1)	Device that should be master has been disconnected after engine start	Radio receiver power source circuit AVC-LAN circuit between radio receiver and component which has stored this code Radio receiver Component which has stored this code
01-E1 (*2)	AMP device records that AMP output does not function even while the source device operates
HINT: 1: This code may be stored if the engine is started and the ignition switch is turned to the START position again. 2: Even if no failure is detected, a trouble code may be recorded depending on the battery condition or engine start voltage.

NOTE:

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