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Home >> Infiniti >> 2020 >> QX80 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 5) >> Engine (ECM) >> DTC P1574: ASCD Vehicle Speed Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

NOTE:
  • If DTC P1574 is displayed with DTC UXXXX, perform the trouble diagnosis for DTC UXXXX.
  • If DTC P1574 is displayed with DTC P0500, perform the trouble diagnosis for DTC P0500. Refer to DTC Description .
  • If DTC P1574 is displayed with DTC P0605, perform the trouble diagnosis for DTC P0605. Refer to DTC Description .
  • If DTC P1574 is displayed with DTC P0607, perform the trouble diagnosis for DTC P0607. Refer to DTC Description .

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1574

ASCD VHL SPD SEN

(ASCD vehicle speed sensor)

ECM detects a difference between two vehicle speed signals is out of the specified range.
  • Harness or connectors

    (The CAN communication line is open or shorted.)

  • Combination meter
  • ABS actuator and electric unit (control unit)
  • Wheel sensor
  • TCM
  • ECM
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