P0327-21: Knock Sensor 1 Circuit Low (Bank1) - Signal amplitude < minimum: Action
- Vehicle Conditions to enable DTC Logging Strategy
- Normal driving above 2300 rpm included high revs
- Prioritized Checks to Perform
- Check powertrain control module for related misfire Diagnostic Trouble Code(s). Rectify these first
- Check knock sensor for correct installation
- Refer to the electrical circuit diagrams and check knock sensor circuit for short circuit to ground, short circuit to power
- Measure knock sensor circuit for correct resistance
- Knock sensor resistance should be greater than 4 Mega Ohms
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and retest
- Install new knock sensor, only when diagnosed as failed