Knock Sensor 1 Circuit Bank 1
2001-2001 Cadillac DeVille 4.6L V8 Northstar
The 2001 Cadillac DeVille is equipped with a 4.6L V8 engine. Below you'll find detailed p0325 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the knock sensor 1 circuit for Bank 1. The knock sensor detects engine detonation/pinging and allows the PCM to retard timing.
Symptoms
- Check Engine Light
- Reduced power (timing retarded)
- Possible pinging/knocking
- Poor fuel economy
Common Causes
- Faulty knock sensor
- Wiring damage
- Incorrect torque on sensor
- PCM failure
- Engine noise masking knock signal
Diagnostic Steps
- Test knock sensor resistance
- Inspect wiring and connector
- Check sensor mounting torque
- Monitor knock signal with scan tool
Repair Notes
Replace knock sensor. Torque to spec (important). Use correct sensor for application.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0325 on Other Vehicles
Common Questions
What does code P0325 mean on a 2001-2001 Cadillac DeVille?
P0325 stands for "Knock Sensor 1 Circuit Bank 1". Malfunction in the knock sensor 1 circuit for Bank 1. The knock sensor detects engine detonation/pinging and allows the PCM to retard timing.
What are the symptoms of P0325 on a Cadillac DeVille?
Common symptoms of P0325 include: Check Engine Light, Reduced power (timing retarded), Possible pinging/knocking, Poor fuel economy.
What causes P0325 on a 2001-2001 Cadillac DeVille?
Common causes of P0325 include: Faulty knock sensor, Wiring damage, Incorrect torque on sensor, PCM failure, Engine noise masking knock signal.
Last updated: March 2026