luisemystic1
Mokka Rail Pressure Sensor Fault
Summary of the thread
A 2017 Vauxhall Mokka with a gasoline engine experienced stalling at idle and reduced engine power, with a check engine light indicating a 'rail pressure sensor signal faulty' error. The issue was identified as potentially being caused by a loose connection or damaged wiring to the fuel pressure sensor located on the fuel rail. The suggested solution was to inspect the wiring or consult a mechanic. Ultimately, the rail pressure sensor was replaced by a mechanic, resolving the problem.
Did this summary help you solve your problem?
4 comment(s)
luisemystic1 (community.author)
Cheers for the reply! I haven't checked the wiring myself, to be honest. I wouldn't really know what I'm looking for. Where exactly is the sensor located? Is it easy to get to?
luisestorm10
Okay, so on mine, which I think is the same engine, the sensor is located on the fuel rail. You should be able to see it if you remove the engine cover. However, if you're not comfortable with car electrics, I'd strongly suggest taking it to a trusted mechanic. A faulty fuel injection system can cause serious damage. Better safe than sorry, especially with fuel pressure issues!
luisemystic1 (community.author)
Thanks a bunch for the advice! Took it to a local mechanic and you were spot on. It was indeed the rail pressure sensor. They replaced it, and the car is running perfectly again. Cost me 240€ all in. Appreciate the help!
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
VAUXHALL
community_crosslink_rmh_model
MOKKA
luisestorm10
That sounds familiar. I've got a Mokka too, and I had a similar problem a while back. The error code pointed to the fuel pressure sensor as well. Were you able to check the wiring to the sensor? Sometimes it's just a loose connection or a damaged wire causing the issue.