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Home >> Infiniti >> 2011 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Driver Assistance System) >> LDW & LDP >> DTC/Circuit Diagnosis >> C1A03 Vehicle Speed Sensor >> DTC Logic >> DTC Detection Logic
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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
C1A03 (3) VHCL SPEED SE CIRC If the vehicle speed signal (wheel speed) from ABS actuator and electric unit (control unit) received by the ADAS control unit via CAN communication, are inconsistent
  • Wheel speed sensor
  • ABS actuator and electric unit (control unit)
  • ADAS control unit
NOTE: If DTC "C1A03" is detected along with DTC "U1000" or "C1A04", first diagnose the DTC "U1000" or "C1A04".