Codes c320, p030, p0172, p0175, and p0302, hard start and idling rough, shuts off?

2017 DODGE RAM
126,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC
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KELSEY ALLEN
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  • 2 POSTS
My truck has a rough start, idles really rough stalls out I have codes c3201, p0301, p0172, p0175, p0302. I've changed the spark plugs and it isn’t any better coils are fine what do I look for next? I’m thinking maybe EGR valve stuck open but I’m not sure.
Apr 23, 2023 at 8:28 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

The codes are two-cylinder misfires and a rich fuel mixture. The C code you provided isn't listed for this vehicle. Just to confirm, this is a 5.7L V8, correct?

Let me know about the code. Also, you may want to check the fuel pressure to see if there is an issue.

Here is a link that explains how it's done:

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

Let me know about the code and what exactly has been done so far. For example, how were the coils checked?

Let me know.

Joe
Apr 23, 2023 at 9:12 PM
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