LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2014 >> QX80 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0460 To P1226 >> DTC P0527: Cooling Fan Speed Sensor >> DTC Logic >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0527 Cooling fan speed sensor circuit range/performance The number of fan speed signals is 16 RPM or less during engine rev.
  • Harness or connectors

    (The Fuel rail pressure sensor circuit is open or shorted.)

    (The Power steering pressure sensor circuit is open or shorted)

    (The Electrically-controlled cooling fan coupling circuit is open or shorted)

  • Fuel rail pressure sensor
  • Power steering pressure sensor
  • Cooling fan speed sensor
  • Electrically-controlled cooling fan coupling
  • Cooling fan
  • IPDM E/R