What does TC on the car dashboard mean?

[Ian]

TC on the car dashboard stands for Traction Control System. The Traction Control System, also known as the Track Control System, relies on electronic sensors to detect when the driven wheels' speed is lower than that of the driving wheels. It then sends signals to adjust ignition timing, reduce throttle opening, decrease fuel supply, downshift, or brake the wheels to prevent wheel slippage. Reasons for the TC light on the car dashboard to illuminate include: 1. Solenoid valve malfunction; 2. Dirty engine oil clogging the solenoid valve filter; 3. Wear of the actuator gears and impeller causing oil pressure leakage and triggering an alarm; 4. Dirty throttle body with an opening reaching 20%, leading the engine computer to mistakenly diagnose a TC fault.