P3043
DCT Clutch Actuator B Position Error
2019-2024 BMW 3 Series G20 2.0L I4 Turbo B48
High SeverityPowertrainGeneric (SAE)
Description
The DCT clutch B actuator is not reaching the commanded position.
Symptoms
- Check Engine Light
- Harsh shifts in even gears
- Difficulty engaging 2nd gear
- Grinding noise on even gear shifts
- Transmission jerking on upshifts
- Delayed 2nd gear engagement
Common Causes
- Faulty clutch B actuator
- Hydraulic leak in B circuit
- Position sensor failure
- Mechanical binding
- Low hydraulic system pressure
Diagnostic Steps
- Read clutch B actuator position PID
- Command actuator through range
- Check hydraulic fluid
- Inspect for leaks
- Test actuator motor
Repair Notes
Replace clutch B actuator assembly. Perform teach-in procedure.
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
P3043 on Other Vehicles
Common Questions
What does code P3043 mean on a 2019-2024 BMW 3 Series G20?
P3043 stands for "DCT Clutch Actuator B Position Error". The DCT clutch B actuator is not reaching the commanded position.
What are the symptoms of P3043 on a BMW 3 Series G20?
Common symptoms of P3043 include: Check Engine Light, Harsh shifts in even gears, Difficulty engaging 2nd gear, Grinding noise on even gear shifts, Transmission jerking on upshifts, Delayed 2nd gear engagement.
What causes P3043 on a 2019-2024 BMW 3 Series G20?
Common causes of P3043 include: Faulty clutch B actuator, Hydraulic leak in B circuit, Position sensor failure, Mechanical binding, Low hydraulic system pressure.