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Why is the check engine light on along with the TC symbol and a message that says engine power reduced?

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"TC" symbol means "traction control", in other words it's trying to keep you from slipping when you try to go. If that light is constantly on, and the check engine light is on, it's PROBABLY telling you that there is something wrong with the traction control system, perhaps a faulty or disconnected wheel sensor.

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First answer by Redbeard. Last edit by Redbeard. Contributor trust: 2028 [recommend contributor]. Question popularity: 14 [recommend question]

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