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2021 chevrolet l5p duramax p2293 p0172 high fuel rail pressure
Hi. Im having a diffucult time troubleshooting a 2021 duramax l5p high pressure fuel system issue. I have already replaced both fuel pressure regulators, and the fuel rail pressure sensor and connector. The issue is it keeps setting dtcs p2293 fuel pressure regulator 2 performance and p0172 fuel system rich. When watching the high pressure fuel system data, i can see the command for 4500 psi, and the pressure regulator #2 command for 10% but rail pressure is measured at 17,000 p.s.i. ive replaced the regulator no.2 twice now and theres no sign of contaminated diesel.
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