Power loss and ABS problems with Citroen DS4 Diesel 2011

Hey, I drive a 2008 Citroen C4 Picasso, so I had a similar problem with my ECU. Back then it was a serious fault that had to be corrected. A couple of problems I had were extremely similar to yours, plus loss of engine power and ABS/DSC system failure. Your guess could be completely correct - the supply voltage to the speed sensor was faulty on mine. The mechanic replaced the control unit and checked the solder joints and wiring. The symptoms changed immediately after the control unit was repaired. I hope this helps you a little. Good luck with it!

(Translated from German)

Hey, thanks for your feedback! That sounds a lot like my situation. Can you remember what you paid for the repair and replacement of the control unit? I don't want to get ripped off. And has anything else given up the ghost since then or has your car been running smoothly again? Thank you in advance!

(Translated from German)

Hey, no problem, always happy to help! Back then, I spent around €1000 on replacing the control unit. Sure, that's a lot of money, but since then the car has been running like a dream again. And to answer your second question: Yes, since the visit to the mechanic, the fault with the supply voltage to the speed sensor (ABS) has also been rectified. Nothing has given up the ghost since then, neither ABS nor anything else. Everything runs smoothly and perfectly. I hope this helps you! And don't get ripped off!

(Translated from German)

Hey, thank you very much! Your answer really helps me and reassures me a little. Of course, €1000 is a lot of money, but what can you do if you're dependent on the car. The important thing is that everything works afterwards. Then I'll probably have to pay a visit to the mechanic and hopefully everything will run just as smoothly as it did for you! Thanks again for your help and advice!

(Translated from German)