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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 P0325: Knock Sensor 1 Circuit (Bank 1)

DTC P0325: Knock Sensor 1 Circuit (Bank 1)

P0325 - KNOCK SENSOR 1 CIRCUIT (BANK 1)

Description:  The knock sensor (KS) detects vibrations upon increase and decrease in engine RPM. The KS generates a voltage based on this vibration. This DTC sets if the voltage goes outside a calibrated level.
Possible Causes: 
  • KS circuit short to ground
  • KS circuit short to voltage
  • KS circuit open
  • Damaged KS
Diagnostic Aids:  A knock sensor voltage greater than 0.5 volt with the ignition ON engine OFF indicates a concern is present.
The vehicle may need to be driven for several minutes to set this DTC.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DG .