After some research and advice from a Renault specialist, this code points to a fuel pressure regulator issue – specifically “Fuel Pressure Regulator Coherence” or a circuit malfunction on the high-pressure fuel rail. In plain English: the ECU is seeing a fuel pressure value that doesn’t match the expected range.
On Renaults with the 2.0 dCI (M9R engine), also check the fuel pressure sensor wiring near the EGR valve – heat damage is common. renault dtc1525f3
Rating: ⭐⭐☆☆☆ (2/5 – frustrating but solvable) After some research and advice from a Renault
I own a 2016 Renault Trafic (2.0 dCi). Recently, the check engine light came on, accompanied by rough idling and a noticeable loss of power. My diagnostic tool pulled the code DTC1525F3 . the check engine light came on