P3044critical severityPowertrain
DCT Gearshift Actuator Drum Position Error
on 2021 Polestar 2 Long Range Single Motor FWD · AWD
What this code means
The gear selector drum actuator in the DCT is not achieving the correct position for the requested gear.
Symptoms
- Check Engine Light
- Failure to select requested gear
- Neutral between shifts
- Grinding during gear changes
- Transmission stuck in one gear
- Complete loss of drive
Common causes
- Gear selector drum actuator failure
- Position sensor malfunction
- Mechanical obstruction in drum
- Hydraulic pressure loss
- Synchronizer ring damage
Diagnostic steps
- Read gear drum position PID
- Command gear selection and monitor response
- Check hydraulic pressure at actuator
- Inspect selector drum position sensor
- Listen for mechanical noise during shifts
Repair notes
Replace gear selector drum actuator or repair hydraulic system. May require transmission removal for synchronizer inspection.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control