XK / XKR ( X150 ) 2006 - 2014

Recurring P0193 (fuel pressure high) on XK

 
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Old 04-29-2019, 11:00 AM
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Default Recurring P0193 (fuel pressure high) on XK

My wife's 2007 XK (147K) has a recurring P0193 code. My mechanic has already replaced the fuel rail pressure sensor, but the code is back. I saw posts indicating that pressure should be constant 55 psi. I was measuring 58 psi via OBDII while idling; I didn't check yet while driving. I did notice that, when I turned off the engine, the fuel pressure went up to 78 psi.

On other forums (X-Type, X100), I saw recommendations to change the fuel filter. That surprised me, as I presumed a blocked filter would cause low fuel pressure, not high.

Any thoughts on what could be going on here? I guess another faulty sensor could be the culprit, but I'm wondering if something else in in play.

Thx,
Doug
 
 
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