CVT Line Pressure Control Performance
2019-2024 BMW 3 Series G20 2.0L I4 Turbo B48
Description
The CVT line pressure is not within the expected range for the current operating conditions. Line pressure controls clamping force on the belt/chain.
Symptoms
- Check Engine Light
- CVT belt slip
- Shudder during acceleration
- Delayed engagement
- Unusual transmission noise
- Overheating transmission
Common Causes
- Faulty line pressure solenoid
- Worn oil pump
- Clogged CVT fluid filter
- Low fluid level
- Internal seal leak
Diagnostic Steps
- Check CVT fluid level and condition
- Monitor line pressure PID on scan tool
- Test pressure control solenoid
- Inspect CVT fluid filter
- Check for internal leaks with pressure test
Repair Notes
Replace line pressure solenoid. If oil pump is weak, transmission rebuild may be required.
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
P3023 on Other Vehicles
Common Questions
What does code P3023 mean on a 2019-2024 BMW 3 Series G20?
P3023 stands for "CVT Line Pressure Control Performance". The CVT line pressure is not within the expected range for the current operating conditions. Line pressure controls clamping force on the belt/chain.
What are the symptoms of P3023 on a BMW 3 Series G20?
Common symptoms of P3023 include: Check Engine Light, CVT belt slip, Shudder during acceleration, Delayed engagement, Unusual transmission noise, Overheating transmission.
What causes P3023 on a 2019-2024 BMW 3 Series G20?
Common causes of P3023 include: Faulty line pressure solenoid, Worn oil pump, Clogged CVT fluid filter, Low fluid level, Internal seal leak.