Engine light code of PO193

2005 MAZDA TRIBUTE
100,000 MILES
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RICHARD FOX
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  • 3 POSTS
This code P0193 is fuel rail pressure sensor high input. Car seems to run normal. Is this serious and where is the pressure sensor located? Does this light effect my gas mileage?
Oct 16, 2011 at 3:26 PM
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MHPAUTOS
  • ✓ASE Certified Mechanic
  • 31,937 POSTS
  • ASE Certified Mechanic
The fuel pressure regulator may be faulty. High fuel pressure will affect power and economy, get the pressure tested. This will require a fuel pressure gauge with correct adapters for your car. Check your mechanic has the correct test equipment to do this job.
Oct 16, 2011 at 3:30 PM
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RENEE L
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  • 1,260 POSTS
Thank you for visiting 2CarPros. Here is a link to an article from this site with step by step instructions and pictures explaining the process of checking the fuel system pressure, regulator and fuel pump in less than fifteen minutes:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If you need further assistance please come back to the site we are always happy to help.

Kindest regards,

Renee
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Dec 5, 2018 at 5:10 PM
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