What does the TC indicator on the car dashboard mean?

1 Answers
StBrynlee
07/29/25 1:58pm
When the car dashboard displays TC, it means the Traction Control system is active. The Traction Control System, also known as the Anti-Slip Regulation 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 apply braking to the wheels to prevent them from slipping. Possible causes for the TC light to illuminate include: 1. Solenoid valve malfunction; 2. Dirty engine oil clogging the solenoid valve filter; 3. Wear between the actuator gear and impeller causing oil pressure leakage and triggering the alarm; 4. Dirty throttle body with opening reaching 20%, leading the engine computer to mistakenly diagnose a TC fault.
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