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Codes C320, p030, P0172, P0175 and P0302, hard start and idling rough, shuts off?

Tiny
KELSEY ALLEN
  • MEMBER
  • 2017 DODGE RAM
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 126,000 MILES
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.
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Sunday, April 23rd, 2023 AT 8:28 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
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
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Sunday, April 23rd, 2023 AT 9:12 PM

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