P0049
Turbo/Supercharger Turbine Overspeed
2006-2011 BMW 325i 3.0L I6 N52 🇬🇧
Critical SeverityPowertrain
Description
The PCM detected the turbocharger turbine is spinning faster than the maximum allowed speed.
Symptoms
- Check Engine Light
- Whining noise from turbo
- Excessive boost
- Possible engine damage
Common Causes
- Wastegate stuck closed
- Boost control solenoid failure
- Overboosting condition
- Exhaust restriction
Diagnostic Steps
- Check wastegate operation
- Test boost control solenoid
- Monitor boost pressure
- Inspect turbo for damage
Repair Notes
Immediately address to prevent engine damage. Repair wastegate or boost control system.
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
P0049 on Other Vehicles
Common Questions
What does code P0049 mean on a 2006-2011 BMW 325i?
P0049 stands for "Turbo/Supercharger Turbine Overspeed". The PCM detected the turbocharger turbine is spinning faster than the maximum allowed speed.
What are the symptoms of P0049 on a BMW 325i?
Common symptoms of P0049 include: Check Engine Light, Whining noise from turbo, Excessive boost, Possible engine damage.
What causes P0049 on a 2006-2011 BMW 325i?
Common causes of P0049 include: Wastegate stuck closed, Boost control solenoid failure, Overboosting condition, Exhaust restriction.