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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 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
01-DD	Device that should be master has been disconnected after hybrid system starts	Multi-display power source circuit AVC-LAN circuit between multi-display and component which has stored this code Multi-display Component which has stored this code
01-E1*	Amplifier device records that amplifier output does not function even while source device is operating
HINT: *. Even if no fault is present, this trouble code may be stored depending on the battery condition or hybrid system start voltage

NOTE:

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