What does the TC light on the vehicle mean?

1 Answers
VanBlakely
07/29/25 8:49pm
When the TC yellow light comes on in the vehicle, it indicates that the traction control system is turned off. This may be due to accidentally touching the traction control switch next to the gear shift lever. If accidental contact is ruled out, then there is a fault in the traction control system. The function of the traction control system is to ensure that the car obtains good traction under various driving conditions. A traction control system fault is not a minor issue and requires timely repair. Causes of traction control system failure: 1. Solenoid valve failure; 2. Dirty engine oil clogging the solenoid valve filter; 3. Wear of the actuator gear and impeller causing oil pressure leakage and triggering the alarm; 4. Dirty throttle body with an opening reaching 20%, leading the engine computer to misjudge a TC fault.
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