P0328moderate severityPowertrain
Knock Sensor 1 Circuit High Input Bank 1
on 2004 Subaru Legacy 3.0L H6 · AWD
What this code means
High voltage from knock sensor 1, Bank 1.
Symptoms
- Check Engine Light
- Excessive timing retard
Common causes
- Short to voltage
- Faulty sensor
- Engine mechanical issue
Diagnostic steps
- Test voltage
- Check for shorts
- Investigate engine noise
Repair notes
Replace sensor. Check for engine issues.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1