Problems with Citroen DS3 petrol engine 2011: Jerking, high consumption and illuminated check engine light

Hi, I have a little experience with cars, but not a pro here, okay? I had a similar problem with my Citroen C3, year 2009. Due to the error "The wiring harness of the intake manifold pressure sensor is open or shorted" in my car, I was also at a loss. I then went to my garage and they did it for me. It cost me 95 euros. Does your vehicle have an OBD scanner? It would be helpful if you could share more detailed information about the error message. This could definitely help to localize the problem more precisely.

(Translated from German)

Hello, thank you for your answer. I also have one of these things lying around, an OBD scanner I mean. I'll read out the error tomorrow morning and then post it here. Oh well, my DS3 has 106556 KM down so far and the last service was done not too long ago. Maybe that can help to narrow down the problem. Thanks again for your advice, I will definitely have the wiring harness looked at.

(Translated from German)

Hey, no problem, you're welcome! Sounds good that you have an OBD scanner to hand yourself. That will certainly help you to get an exact error code. The mileage of your DS3 isn't exactly low, so wear and tear or defective parts can definitely be a problem - especially things like the intake manifold pressure sensor or the wiring harness. In any case, make sure you mention to the technicians that you want them to check this. And yes, even if it hasn't been very long since the last service, but if those particular parts weren't checked, they could still be responsible for the problems. I look forward to your report after you have read out the fault. Maybe then we can understand even better what's going on. Take care and good luck!

(Translated from German)

Hey, thanks again! I will definitely follow your advice and pass this on to the technicians. I hope it's just a minor problem and won't be too expensive. The OBD scanner will do its job tomorrow and I'll keep you posted. Thanks for the encouragement and your advice. I'll let you know when I know more. Take care and thank you!

(Translated from German)

Hi Dirk, I wanted to ask you what your situation is. I have exactly the same problem with the same car. I would be pleased if you could help me. I suspect that it is the boost pressure sensor. Is the boost pressure sensor and intake manifold pressure sensor the same? Many thanks in advance.

(Translated from German)

The boost pressure sensor and the intake manifold pressure sensor are often referred to interchangeably, but they can serve different functions depending on the vehicle. In many cases, they are indeed the same sensor, especially in naturally aspirated engines. However, in turbocharged engines, the boost pressure sensor specifically measures the pressure in the intake manifold caused by the turbocharger. If you're experiencing similar issues, I recommend using an OBD scanner to check for any error codes. This can help pinpoint whether the sensor is faulty or if there might be another issue. Let me know what you find, and I can help further!