DTC P033C-11: Knock Sensor 4 Circuit Low (Bank 2) - Circuit short to ground: Action
- Refer to the appropriate system wiring diagrams and check knock sensor circuit for short circuit to ground
- Measure knock sensor circuit for correct resistance
- 1 to 1.8 Mega Ohms
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Clear the DTCs and retest
- Check and install new knock sensor as required