Turbo Compressor Recirculation Valve Performance
2019-2024 BMW 3 Series G20 2.0L I4 Turbo B48
Description
The turbo compressor recirculation valve (CRV) that prevents compressor surge during rapid throttle closure is not functioning within specification.
Symptoms
- Compressor flutter or chirping on throttle lift
- Reduced turbo longevity
- Slight hesitation on re-acceleration after lift
- Turbo surge noise under certain conditions
- Boost response delayed after throttle reapplication
Common Causes
- CRV diaphragm torn
- CRV spring tension incorrect
- Vacuum actuator line leaking
- Solenoid control circuit fault
- Valve stuck partially open reducing boost
Diagnostic Steps
- Listen for compressor surge during throttle transitions
- Test CRV vacuum actuator operation
- Inspect CRV diaphragm and spring
- Check control solenoid operation
- Monitor boost recovery after throttle lift
Repair Notes
Replace compressor recirculation valve. Check vacuum lines to actuator. Upgraded aftermarket valves are available but must match boost specifications.
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
P3038 on Other Vehicles
Common Questions
What does code P3038 mean on a 2019-2024 BMW 3 Series G20?
P3038 stands for "Turbo Compressor Recirculation Valve Performance". The turbo compressor recirculation valve (CRV) that prevents compressor surge during rapid throttle closure is not functioning within specification.
What are the symptoms of P3038 on a BMW 3 Series G20?
Common symptoms of P3038 include: Compressor flutter or chirping on throttle lift, Reduced turbo longevity, Slight hesitation on re-acceleration after lift, Turbo surge noise under certain conditions, Boost response delayed after throttle reapplication.
What causes P3038 on a 2019-2024 BMW 3 Series G20?
Common causes of P3038 include: CRV diaphragm torn, CRV spring tension incorrect, Vacuum actuator line leaking, Solenoid control circuit fault, Valve stuck partially open reducing boost.