What does the warning light that says ect pwr mean?

The "ECT PWR" warning light stands for "Electronically Controlled Transmission Power." It indicates that the vehicle is in a power mode, which alters the transmission's shift points for improved acceleration and performance. This mode is typically activated during heavy acceleration or towing. If the light remains on, it may suggest a transmission issue, and it's advisable to have the vehicle checked by a professional.