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Home >> Nissan-Datsun >> 2008 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1148 To P2A03 (Qr25DE) >> DTC P1574 ASCD Vehicle Speed Sensor >> On Board Diagnosis Logic
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On Board Diagnosis Logic

NOTE:
  • If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to "DTC U1000, U1001 CAN COMMUNICATION LINE ".
  • If DTC P1574 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to "DTC U1010 CAN COMMUNICATION ".
  • If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer to "DTC P0500 VSS ".
  • If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to "DTC P0605 ECM ".
DTC DETECTING CONDITION AND POSSIBLE CAUSES CHART

DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause
P1574
1574
ASCD vehicle speed sensor ECM detects a difference between two vehicle speed signals is out of the specified range.
  • Harness or connectors (CAN communication line is open or shorted.)
  • Harness or connectors (Combination meter circuit is open or shorted.)
  • TCM (CVT models)
  • Combination meter
  • Wheel sensor
  • ECM