LEMON Manuals: Even more car manuals for everyone
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 >> P0495 - Fan Speed High

P0495 - Fan Speed High

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.
P0495 - FAN SPEED HIGH

Description:  The powertrain control module (PCM) uses the fan speed sensor (FSS) input to monitor the cooling fan clutch speed. If the indicated fan speed is higher than the calibrated value during the key ON engine running (KOER) self-test, the DTC is set.
Possible Causes: 
  • Mechanical binding
  • Damaged FSS sensor
  • Damaged PCM
Diagnostic Aids:  Check to see if fan rotates on clutch freely.
Application    Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST AH .