P3043
DCT Clutch Actuator B Position Error
2014-2021 BMW i3 Range Extender
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
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P3043 on Other Vehicles
Common Questions
What does code P3043 mean on a 2014-2021 BMW i3?
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 i3?
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 2014-2021 BMW i3?
Common causes of P3043 include: Faulty clutch B actuator, Hydraulic leak in B circuit, Position sensor failure, Mechanical binding, Low hydraulic system pressure.