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DTC U2124-00: Communication Error With Front Side Radar Sensor (RH)

U2124-00: (VCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Communication error with front side radar sensor (RH)
Detection condition
  • The vehicle control module (VCM) detects that the front side radar sensor (LH) cannot receive the CAN signal from the front side radar sensor (RH).
Fail-safe (See DTC TABLE [VCM] .)
Possible cause
  1. DTCs are stored in the following modules.
  2. Malfunction in wiring harness (including connector/terminal) between front side radar sensor (RH) and body ground (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .)
  3. Malfunction in wiring harness (including connector/terminal) between IG1 relay and front side radar sensor (RH) (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .)
  4. Malfunction in wiring harness (including connector/terminal) between front side radar sensor (RH) and front side radar sensor (LH) (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .)
  5. Front side radar sensor (LH) (Refer to FRONT SIDE RADAR SENSOR REMOVAL/INSTALLATION in service information.)
  6. Front side radar sensor (RH) (Refer to FRONT SIDE RADAR SENSOR REMOVAL/INSTALLATION in service information.)
  7. Vehicle control module (VCM) malfunction (built into body control module (BCM)) (Refer to BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION in service information.)
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (See CLEARING DTC .)
G16795421Courtesy of MAZDA MOTORS CORP.
1 Front side radar sensor (LH)
2 Front side radar sensor (RH)
3 IG1 relay