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DTC Detection Logic

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION AND POSSIBLE CAUSES

DTC Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P1574 ASCD VEHICLE SPEED SENSOR (ASCD vehicle speed sensor) The difference between the two vehicle speed signals is out of the specified range.
  • Electrically-driven intelligent brake unit
  • Traction motor
  • VCM