Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
4-56 Powertrain DTC Charts and Descriptions
Diagnostic Trouble Code (DTC) Charts and Descriptions
P0327 - Knock Sensor 1 Circuit Low (Bank 1)
Description: This DTC sets when the voltage goes outside a calibrated level. The knock sensor 1 (KS1) detects vibrations
upon increase and decrease in engine RPM. The KS1 generates a voltage based on this vibration.
Possible Causes: • KS1+ circuit open
• KS1- circuit open
• KS1+ circuit short to ground
• KS1- circuit short to ground
• Damaged KS1
Diagnostic Aids: 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.
P0328 - Knock Sensor 1 Circuit High (Bank 1)
Description: This DTC sets when the voltage goes outside a calibrated level. The knock sensor 1 (KS1) detects vibrations
upon increase and decrease in engine RPM. The KS1 generates a voltage based on this vibration.
Possible Causes: • KS1+ circuit short to voltage
• KS1- circuit short to voltage
• Damaged KS1
Diagnostic Aids: 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.
P0330 - Knock Sensor 2 Circuit (Bank 2)
Description: This DTC sets when the voltage goes outside a calibrated level. The knock sensor 2 (KS2) detects vibrations
upon increase and decrease in engine RPM. The KS2 generates a voltage based on this vibration.
Possible Causes: • KS2+ circuit open
• KS2- circuit open
• KS2+ circuit short to voltage
• KS2- circuit short to voltage
• KS2+ circuit short to ground
• KS2- circuit short to ground
• Damaged KS2
Diagnostic Aids: A KS2 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.
P0331 - Knock Sensor 2 Circuit Range/Performance (Bank 2)
Description: This DTC sets when the voltage goes outside a calibrated level. The knock sensor 2 (KS2) detects vibrations
upon increase and decrease in engine RPM. The KS2 generates a voltage based on this vibration.
Possible Causes: • KS2+ circuit open
• KS2- circuit open
• KS2+ circuit short to voltage
• KS2- circuit short to voltage
• KS2+ circuit short to ground
• KS2- circuit short to ground
• Damaged KS2
Diagnostic Aids: A KS2 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.
2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.