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Hi. I have a 2012 Jaguar XF, non supercharged 5.0. The code I'm reading is for the fuel pressure sensor. When I looked it up the stores only sell one. When I searched my engine manual it throwed me because it speaks of two. A high pressure one and a low one. So my question is actually two part.
1. The actual reading is high pressure on the low pressure fuel side. So do I change the low pressure sensor and if so where is it located?
2. Is there a difference in the sensor for the high and low side? I ask cause every medium I search only sells one.
 

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No idea about low and high pressure sensors in the pressure rail, but before changing any sensors you should connect a pressure gauge to get an accurate measure of what's going on, rather than just changing sensors. It could also be the pressure relief valve, if one is fitted.
 
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