P0326moderate severityPowertrain
Knock Sensor 1 Circuit Range/Performance Bank 1
on 1999 BMW 540iT E39 4.4L V8 · RWD
What this code means
The knock sensor 1 signal is out of expected range.
Symptoms
- Check Engine Light
- Timing retarded
- Reduced power
Common causes
- Sensor damaged
- Incorrect mounting
- Engine mechanical noise
Diagnostic steps
- Test sensor output
- Verify mounting torque
- Check for engine noise issues
Repair notes
Replace knock sensor.
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