Honda Accord Charge Air Temperature Sensor Issue

I encountered a somewhat similar situation with my previous vehicle, a 2014 Opel Insignia. The symptoms were quite alike: check engine light, diminished power, and unusual air noises. Have you inspected the cable and plug connection of the charge air temperature sensor for any visible damage or corrosion?

Thanks for the quick reply! I haven't specifically checked the cable and plug that closely, I just gave them a quick once-over. Where exactly should I be looking for damage or corrosion on the charge air temperature sensor cable and plug? Is there a common point of failure?

Generally, one should inspect the integrity of the wire insulation for any cracks or abrasions. Furthermore, the pins inside the plug are susceptible to corrosion, which can impede proper electrical contact. Given the error code and your symptoms, and considering my past experience, it would be prudent to have a qualified workshop perform a thorough diagnostic evaluation. The error may be intermittent. It could prevent consequential damage.

It was indeed the cable or plug connection of the charge air temperature sensor that was defective, just as you suspected! Took it to the shop, they replaced the faulty part, and the total cost was 95€. The check engine light is gone, the power is back, and the whistling noise has disappeared. Thanks a lot for pointing me in the right direction!