DTC Logic
WARNING: This page is about a different car, the 2010 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION CONDITION CHART
| DTC |
Display contents of CONSULT-III |
DTC Detection Condition |
Action to take |
| U121F |
INTERNAL COMM [U121F] |
Internal malfunction of AV control unit (internal communication error) is detected. |
AV control unit power supply and ground circuit. |