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Master rail pressure sensor fault

Hi, I've got a 2020 Renault Master, diesel engine, and I'm having a bit of trouble. The check engine light keeps coming on, and the engine sometimes stalls when idling. It also feels like I've lost some power. My scanner says it's a 'rail pressure sensor signal faulty'. Could this be the sensor itself?

4 comment(s)

Hey, I had something similar happen with my Master. Same symptoms, check engine light and all. 'Rail pressure sensor signal faulty' sounds like the culprit. It's like your fuel system's complaining it can't get enough juice! Have you tried wiggling the connector to the sensor? Sometimes it's just a bad connection.

Thanks for the quick reply! Where exactly is that sensor located, and is it easy to get to? Also, did replacing the sensor fix the issue for you completely?

It's usually on the fuel rail, which is connected to the injectors. It's not too hard to spot, but reaching it might be a bit fiddly depending on your engine layout. And yeah, replacing the sensor sorted it right out! But honestly, it might be worth having a workshop take a look to confirm it, just to be sure you're not chasing ghosts. Could save you some time and money in the long run!

Okay, that's great info, thanks a lot! I'll probably take it to a workshop then. Just got a quote for the sensor replacement, around 240€. Hopefully, that will solve the issue.

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