DS5 Hybrid Power Loss

Hey, that sounds frustrating! I had a similar problem with my Opel Insignia a while back – different car, I know. Engine felt like it was in limp mode, and the check engine light was on constantly. I suspected the throttle position sensor, but it turned out to be a faulty mass airflow sensor. Did you check it? What does the engine idling look like? Any response delay? Maybe you can check for that throttle sensor before anything else?

Interesting! I haven't checked the mass airflow sensor yet, but I will definitely take a look. When yours was faulty, did it also cause any issues with the throttle response or a delay when accelerating? I will start by looking at the throttle sensor, as I saw some videos on how to access it. I'm just trying to figure out if I'm on the right track focusing on the throttle valve or if I should be looking at other potential causes as well.

Yes, the throttle response was definitely affected, felt like a delay especially at lower speeds. It could very well be the throttle valve sensor in your case, so it's a good starting point. To be honest, with the hybrid system in your DS5, it might be best to have a workshop diagnose it properly. I ended up paying around 265€ for the replacement and the labour.

Thanks a lot for the insight! I appreciate you sharing your experience with the Opel. I think you're right; I'll probably take it to a trusted mechanic to get a proper diagnosis. The information helps me go to the workshop better informed and prepared for the likely repair costs. I'll let you know the outcome.