Diagnostic Aids
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the knock sensor for physical damage. A damaged sensor may cause a DTC to set.
- The knock sensor mounting surface should be free of burrs, casting flash, and foreign material.
- Tightening the retaining bolt too much or simply dropping the knock sensor on the ground can damage it.