CVT Torque Converter Lockup Clutch Slip
2014-2016 Tesla Model S P85D Dual Motor AWD
Description
The torque converter lockup clutch in the CVT is slipping beyond acceptable limits during cruise conditions.
Symptoms
- Check Engine Light
- RPM fluctuation at highway speed
- Reduced fuel economy
- Vibration at cruise
- Transmission temperature elevated
Common Causes
- Lockup clutch friction material worn
- CVT fluid degradation
- Lockup control solenoid weak
- Torque converter piston seal leak
- Excessive heat damage to clutch
Diagnostic Steps
- Monitor TCC slip at steady cruise
- Check CVT fluid condition and level
- Test lockup solenoid pressure
- Measure transmission temperature
- Compare input and output shaft speeds during lockup
Repair Notes
Replace torque converter. Service CVT fluid. Use only manufacturer-specified CVT fluid.
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
P3026 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
2017-2020 Standard Range Plus Single Motor RWD
Tesla Model 3
2021-2024 Long Range Dual Motor AWD
Tesla Model 3
2021-2024 Performance Dual Motor AWD
Common Questions
What does code P3026 mean on a 2014-2016 Tesla Model S?
P3026 stands for "CVT Torque Converter Lockup Clutch Slip". The torque converter lockup clutch in the CVT is slipping beyond acceptable limits during cruise conditions.
What are the symptoms of P3026 on a Tesla Model S?
Common symptoms of P3026 include: Check Engine Light, RPM fluctuation at highway speed, Reduced fuel economy, Vibration at cruise, Transmission temperature elevated.
What causes P3026 on a 2014-2016 Tesla Model S?
Common causes of P3026 include: Lockup clutch friction material worn, CVT fluid degradation, Lockup control solenoid weak, Torque converter piston seal leak, Excessive heat damage to clutch.