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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2050 (Engine Controls - Diagnostic Subroutines - 6.4L 99R Diesel -- F250-F550 Super Duty) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P0528 - Fan Speed Sensor Circuit No Signal

P0528 - Fan Speed Sensor Circuit No Signal

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P0528 - FAN SPEED SENSOR CIRCUIT NO SIGNAL

Description:  The purpose of this diagnostic test is to compare the fan speed signal to the minimum and maximum calibrated values. If the fan speed is less than the minimum or greater than the maximum calibrated value, the DTC is set.
Possible Causes: 
  • Damaged FSS sensor
  • Damaged PCM
  • Obstruction stopping fan from moving
Diagnostic Aids:  Visually inspect the cooling fan clutch for damage or obstruction.
Application    Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST AH .
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