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oskareule1

C6 fuel pressure sensor issue

Alright Citroen heads, I'm kinda losing it here. My 2011 C6 with a gasoline engine is acting up. Check engine light is on, running rough, stalls at idle, and jerks like crazy when accelerating. Mileage is at 155869 km, and I'm suspecting it's got something to do with the fuel pump... Any ideas?

4 comment(s)

charlotteblade8

Fuel pump issues on the C6 aren't uncommon. Have you checked the fuel pressure sensor? Stalling and rough running could indicate a faulty sensor. Also, have you scanned for any specific error codes relating to fuel pressure or injector performance?

oskareule1 (Author)

Fuel pressure sensor, huh? I didn't think about that. Where is that thing located anyway? And would a bad sensor really cause all those problems? Fuel economy has also gone down the drain, could the fuel injector be involved?

charlotteblade8

The sensor is usually on the fuel rail. Yes, a defective fuel pressure sensor can cause those symptoms, leading to miscalculated fuel mixture. Given the symptoms, the cable or plug connection to the sensor is a likely culprit. Check this, or leave it be and visit a workshop.

oskareule1 (Author)

Thanks. Turns out you nailed it – fuel pressure sensor. The cable connection was janky. 95€ later including diagnostics and I'm back on the road. Appreciate the help!

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