LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission (Re0F10J) (Diagnostic Trouble Codes (DTCS), Symptom Diagnosis And R & I) (Except Hybrid) >> DTC/Circuit Diagnosis >> DTC U0121: Lost Communication (Abs) >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC CONSULT screen terms
[Trouble diagnosis content]
DTC detection condition Possible causes
U0121 LOST COMM (ABS)
[Lost Communication With Anti-Lock Brake System (ABS) Control Module]
When the ignition switch is ON, TCM is unable to receive the CAN communications signal from ADAS control unit continuously for 2 seconds or more.
  • ADAS control unit
  • Harness or connector

    (CAN communication line is open or shorted)