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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Controls - Powertrain DTC Charts & Descriptions (Diesel)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P0494 - Fan Speed Low

P0494 - Fan Speed Low

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P0494 - FAN SPEED LOW

Description:  The powertrain control module (PCM) uses the fan speed sensor (FSS) input to monitor the cooling fan clutch speed. This DTC sets if the indicated fan speed is lower than the calibrated value during the key ON engine running (KOER) self-test.
Possible Causes: 
  • Damaged FSS
  • 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 GO to PINPOINT TEST AH .
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