P0191 error code

2003 JAGUAR S-TYPE
106,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TJWALLJASPER
  • MEMBER
  • 1 POST
I have the vehicle listed above that is throwing a P0191 code (fuel rail pressure sensor range performance). The car will run fine for a few miles and then start to chug. Turning the car off will temporarily solve this but I need more that that. Fuel pump was changed 12 months ago with an OEM Jaguar pump, new fuel filter put on a week ago, and cleaned out mass air flow sensor. Planning on cleaning out throttle body tonight. Any other suggestions as to why my Jaguar is "chugging"?
Feb 25, 2011 at 4:21 PM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
The sluggish feeling is due to this code as this is a fuel pressure regulator code. I attached the testing that needs to be done to find what the cause is.

Let's run through this testing and go from there.

Here is a guide that will help do this electrical testing if needed:

https://www.2carpros.com/articles/how-to-check-wiring

Let us know what questions you have. Thanks
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Dec 4, 2020 at 4:43 AM
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