P3043high severityPowertrain
DCT Clutch Actuator B Position Error
on 2019 Tesla Model 3 Performance Dual Motor AWD · AWD
What this code means
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.
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