DTC Detection Logic
WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION LOGIC
| DTC (On board display) | Trouble diagnosis name | DTC detecting condition | Possible causes |
|---|---|---|---|
| U0401 (120) | ECM CAN CIR1 | If ADAS control unit detects an error signal that is received from ECM via CAN communication | ECM |
NOTE:
If DTC "U0401" is detected along with DTC "U1000", first diagnose the DTC "U1000". Refer to
"ADAS CONTROL UNIT : DTC LOGIC ".