P0304
Cylinder 4 Misfire Detected
1997-2000 BMW 528i E39 2.8L I6 🇬🇧
High SeverityPowertrain
Description
Misfire detected in cylinder 4.
Symptoms
- Check Engine Light
- Rough idle
- Vibration
- Loss of power
Common Causes
- Worn spark plug #4
- Faulty ignition coil #4
- Faulty injector #4
- Low compression cyl 4
Diagnostic Steps
- Swap coil #4
- Inspect spark plug #4
- Test injector #4
- Check compression
Repair Notes
Swap coil to diagnose.
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
P0304 on Other Vehicles
Common Questions
What does code P0304 mean on a 1997-2000 BMW 528i E39?
P0304 stands for "Cylinder 4 Misfire Detected". Misfire detected in cylinder 4.
What are the symptoms of P0304 on a BMW 528i E39?
Common symptoms of P0304 include: Check Engine Light, Rough idle, Vibration, Loss of power.
What causes P0304 on a 1997-2000 BMW 528i E39?
Common causes of P0304 include: Worn spark plug #4, Faulty ignition coil #4, Faulty injector #4, Low compression cyl 4.