What to Do When the Traction Control Off Indicator Light Is On?

1 Answers
SanAlan
07/30/25 8:42am
The reason the traction control off indicator light is on indicates the working status of the vehicle's TCS (Traction Control System). When this light is illuminated, it means the TCS system has been deactivated. The main reasons for the traction control light on the car dashboard being on are: 1. Fuel system malfunctions causing reduced fuel injection, such as clogged injectors, low fuel pressure, or impurities in the gasoline. Inaccurate air measurement, leading to a discrepancy between the detected air intake and the actual air intake. 2. If the detected air intake is lower than the actual air intake, the PCM-calculated fuel injection will be less than the actual demand, causing the oxygen sensor feedback signal to indicate a lean condition. The PCM then increases the fuel injection, leading to a higher positive fuel trim value. Inaccurate closed-loop feedback signals, such as a faulty oxygen sensor.
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