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antoniaice4
Peugeot 4008 DPF Pressure Sensor Issue
4 comment(s)
antoniaice4 (Author)
The code was P2453 – Diesel Particulate Filter Differential Pressure Sensor Circuit Range/Performance. Does that ring any bells, or is it a different beast altogether?
paulaloewe1
Ah, yeah, that's definitely pointing towards the DPF pressure sensor being the culprit. It's like when you have a blocked nose and can't smell anything - the sensor isn't getting the right signals. While it could be something else in the DPF system, that sensor is the most likely suspect. I'd suggest taking it to a workshop to confirm, but be prepared for them to say it needs replacing.
antoniaice4 (Author)
I took it to the shop, and you were spot on. The exhaust back pressure sensor was defective. Replaced it for 245€ and now it runs like a charm again!
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paulaloewe1
That sounds familiar. I had similar symptoms on my old Opel Astra, but it was a petrol engine. Same warning lights and loss of power, felt like the car was breathing through a straw. Turned out to be a faulty sensor, but mine was related to the airflow. Did your reader give you any specific codes besides the 'low pressure' message?