CVT Ratio Control System Stuck
2017-2020 Tesla Model 3 Standard Range Plus Single Motor RWD
Description
The CVT ratio control system is unable to change the transmission ratio. The pulleys may be mechanically seized or the stepper motor has failed.
Symptoms
- Check Engine Light
- Engine revs stay constant regardless of speed
- No ratio change during acceleration
- Sudden RPM changes
- Vehicle feels stuck in one gear
- Harsh engagement from stop
Common Causes
- Stepper motor failure
- Pulley guide rail damage
- Hydraulic valve body stuck
- Belt/chain jammed
- Foreign object in pulley mechanism
Diagnostic Steps
- Monitor CVT ratio PID during driving
- Command ratio change with scan tool
- Check stepper motor operation
- Inspect hydraulic valve body operation
- Check for metallic debris in fluid
Repair Notes
CVT likely requires removal and disassembly. Stepper motor or valve body replacement. Severe cases require transmission replacement.
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
P3024 on Other Vehicles
Tesla Cybertruck
2024-2024 Cyberbeast Tri Motor AWD
Tesla Cybertruck
2024-2024 Dual Motor AWD
Tesla Cybertruck
2024-2024 Single Motor RWD
Tesla Model 3
2017-2020 Long Range Dual Motor AWD
Tesla Model 3
2017-2020 Performance Dual Motor AWD
Tesla Model 3
2021-2024 Long Range Dual Motor AWD
Tesla Model 3
2021-2024 Performance Dual Motor AWD
Tesla Model 3
2021-2024 Standard Range Single Motor RWD
Common Questions
What does code P3024 mean on a 2017-2020 Tesla Model 3?
P3024 stands for "CVT Ratio Control System Stuck". The CVT ratio control system is unable to change the transmission ratio. The pulleys may be mechanically seized or the stepper motor has failed.
What are the symptoms of P3024 on a Tesla Model 3?
Common symptoms of P3024 include: Check Engine Light, Engine revs stay constant regardless of speed, No ratio change during acceleration, Sudden RPM changes, Vehicle feels stuck in one gear, Harsh engagement from stop.
What causes P3024 on a 2017-2020 Tesla Model 3?
Common causes of P3024 include: Stepper motor failure, Pulley guide rail damage, Hydraulic valve body stuck, Belt/chain jammed, Foreign object in pulley mechanism.