P0325
Knock/Combustion Vibration Sensor A Circuit
Powertrain · Generic (all makes)System: Electrical/Circuits + Ignition
Safe to drive short term. Book a repair.
Likely causes
- Failed knock sensor
- Damaged knock sensor wiring (often under the intake manifold)
What to check first
Inspect the harness before replacing the sensor; on many V6 and V8 engines the sensor sits under the intake.
Typical repair cost
$150 – $450
Independent-shop parts and labor for the usual fix. Your price depends on the actual cause and the vehicle.
Next step
General information, not a diagnosis of your vehicle. Repair costs are typical shop ranges, not quotes.