Engine shuts off while driving, codes p0120, p0220 and p1516

2005 GMC YUKON
160,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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SEANDATANK
  • MEMBER
  • 1 POST
My truck shut off while I was driving. It acted like it had no fuel, but there was gas in the tank. It did this five times before I got back to my house. It would start right back up. When I put my scanner on it it pulled codes for p0120 p0220 and p1516 those codes let me to believe that it was the TPS. I change the TPS and I am still having the same issue. Could this be a fuel pump or a different sensor? Because now Ia m getting no codes at all and my check engine light is not on nor is any other lights.
Sep 28, 2018 at 12:56 PM
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DANNY L
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 5,648 POSTS
Hello, I am Danny.

Yes, I would suggest testing the fuel pressure. It could be a weak/failing fuel pump. If you do not have access to a pressure tester your local auto parts stores have a tool loaner program and will rent you one. Your fuel pressure should be 55-62 P.S.I. I have attached a tutorial showing how to test. Also, code P0120 is the Accelerator Position Sensor. Was that replaced? It is mounted to the gas pedal and acts as a drive-by-wire linkage in conjunction with the TPS you replaced. I have attached a picture. Hope this helps and feel free to ask any questions.Thanks for using 2CarPros.
Danny-

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Sep 28, 2018 at 3:28 PM
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