Torque Converter Clutch Capacity Low
2001-2005 BMW 325i E46 2.5L I6
Description
The torque converter clutch is not transmitting the expected amount of torque. Slip is detected beyond the normal engagement tolerance.
Symptoms
- Check Engine Light
- TCC shudder at highway speed
- Slight RPM fluctuation at cruise
- Reduced fuel economy at highway
- Torque converter area overheating
- Vibration at steady throttle
Common Causes
- Worn torque converter clutch lining
- Degraded transmission fluid
- TCC apply solenoid weak
- Internal seal leak
- TCC damper spring failure
Diagnostic Steps
- Monitor TCC slip PID at steady cruise
- Check transmission fluid condition
- Test TCC apply pressure
- Inspect TCC solenoid operation
- Perform stall speed test
Repair Notes
Replace torque converter. Flush transmission fluid. Some vehicles respond to fluid replacement alone.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P3063 on Other Vehicles
Common Questions
What does code P3063 mean on a 2001-2005 BMW 325i E46?
P3063 stands for "Torque Converter Clutch Capacity Low". The torque converter clutch is not transmitting the expected amount of torque. Slip is detected beyond the normal engagement tolerance.
What are the symptoms of P3063 on a BMW 325i E46?
Common symptoms of P3063 include: Check Engine Light, TCC shudder at highway speed, Slight RPM fluctuation at cruise, Reduced fuel economy at highway, Torque converter area overheating, Vibration at steady throttle.
What causes P3063 on a 2001-2005 BMW 325i E46?
Common causes of P3063 include: Worn torque converter clutch lining, Degraded transmission fluid, TCC apply solenoid weak, Internal seal leak, TCC damper spring failure.