Diagnostic Trouble Code
P0325 — Knock Sensor Circuit Bank 1
Knock Sensor Circuit Bank 1
Definition
The knock sensor on Bank 1 is not providing a valid signal. The knock sensor detects engine detonation (pre-ignition) and allows the ECM to retard timing to prevent engine damage.
Common Causes
- Faulty knock sensor
- Damaged wiring or connector
- Knock sensor mounting bolt loose or corroded
- ECM fault (rare)