April 5, 2026: LEMON Manuals is launched! Read the announcement.

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 Tundra. However, it is still accessible from the selected car via links, so may be relevant.

DTC TROUBLE DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
01-DD*1	Device that should be master has been disconnected after engine starts.	Navigation receiver power source circuit AVC-LAN circuit between Navigation receiver and component which has stored this code Navigation receiver Component which has stored this code
01-E11, 2	Amplifier device records that amplifier output does not function even while source device is operating.
HINT: 1: This code may be stored if the engine is started, idled for 60 seconds and then the ignition switch is turned to the START position again. 2: Even if no fault is present, this trouble code may be stored 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 navigation receiver is the master unit.
Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.