LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2010 >> EX35 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Audio, Visual, Navigation System >> BOSE Audio With Navigation >> Component Diagnosis >> DTC U121B: Av Control Unit >> DTC Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Logic

DTC CHART

DTC Display contents of CONSULT-III DTC Detection Condition Action to take
U121B HDD-COMM [U121B] Internal malfunction of AV control unit (HDD communication error) is detected. Replace AV control unit
scientia non olet · About LEMON Manuals