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Home >> Ford >> 2011 >> Focus S, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions - DTC P0218 Through DTC P0581 - (Except Diesel & Hybrid) >> DTC P0528: Fan Speed Sensor Circuit No Signal

DTC P0528: Fan Speed Sensor Circuit No Signal

P0528 - FAN SPEED SENSOR CIRCUIT NO SIGNAL

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: 
  • FSS VPWR circuit open in the harness
  • FSS PWRGND circuit open in the harness
  • FSS circuit open in the harness
  • FSS circuit short to voltage or ground in the harness
  • Damaged FSS
  • Damaged PCM
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 HV .
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