Ecosport Charge Air Temperature Sensor Issue

Sounds familiar. I had similar symptoms on my old Opel Astra, although the error code was different. Reduced power and a hissing sound usually points to an air leak. Did you check the cable and plug connection of the sensor? Maybe there's a loose connection or damaged wire.

Thanks for the quick response! I wiggled the connector, but didn't see anything obvious. Was your issue on the Opel also related to a faulty connector, or something else entirely?

For me it was indeed the connector. Visually it looked okay, but I think there was corrosion inside. I wiggled it a bit too much and it broke off. I'd suggest you check the pins inside really carefully. However, considering your symptoms, it might be best to get it checked out at a workshop. Better safe than sorry.

Appreciate the advice! I inspected the connector more closely, and you were right, one of the pins was corroded. I cleaned it up as best I could, but I think it's still not making perfect contact. I took it to my local shop, and the diagnostic pointed directly to the charge air temperature sensor. They replaced the sensor and the pigtail connector, total cost 95€. The hissing is gone, and the car is running like new again. Thanks again!