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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Engine Controls (Except Diesel & Hybrid) - Powertrain DTC Descriptions - DTC P0571 - P1674) >> DTC P0691: Fan 1 Control Circuit Low

DTC P0691: Fan 1 Control Circuit Low

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P0691 - FAN 1 CONTROL CIRCUIT LOW

Description:  This DTC sets when the PCM detects the fan control (FC) circuit voltage is less than the desired voltage.
Possible Causes: 
  • FC circuit open or short to ground
  • Damaged FC relay
Diagnostic Aids:  Check the wiring, connectors and FC relay for damage.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST KF .