2020 - Rough Idle + “Press Start” flashing

[md-lucky]

2020 ecodiesel. Basically stock, just a pedal commander.

Second time in 2 weeks I’ve had a slightly rough idle in drive while stopped for a stop light.

I have my MPH as the center instrument cluster. As it is rough idling, it keeps flashing what looks like the “press to start” message you normally see at startup.

I tried to snag a video of it and of course I was too slow and the light changed.

Was concerned the truck was going to die at idle. Definitely not a great feeling.

No other symptoms or issues. No codes or messages.

Mid 30s for temp and about 4500 feet.

Anyone else experience similar?

 

[NewLove]

Mine did this with my disaster case when I bought the truck. Ultimately it was the EGR valves that was the problem. I think what you are complaining about is what my truck was doing in the limp mode it went into... Mine did eventually throw a check engine light. Didn’t happen immediately though. My truck had 300 miles on it at the time.


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[md-lucky]

Mine did this with my disaster case when I bought the truck. Ultimately it was the EGR valves that was the problem. I think what you are complaining about is what my truck was doing in the limp mode it went into... Mine did eventually throw a check engine light. Didn’t happen immediately though. My truck had 300 miles on it at the time.


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Thanks NewLove.

What was the ultimate solution to the issue?

 

[NewLove]

Thanks NewLove.

What was the ultimate solution to the issue?

New EGR valves and 7 weeks later.


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[WXman]

If you take it to the dealer, get that Pedal Commander out of there before you do.

I've already seen one guy have the dealership deny to work on his for a separate issue under warranty because he had a Pedal Commander. And I assume that if you go in complaining about rough idle and they see an aftermarket throttle device hooked up they'll likely refuse to touch it.

 

[J-Cooz]

I would take the pedal commander out and see if this happens. It very well could be causing the issue

 

[Bad Notch]

Bringing this back to the top. Has anyone had this issue resolved ? I have a 21 ED with 19k miles and just this morning it was running rough and had a stumble off idle. No check engine light or anything but cleared up after a little while. I was wondering if it was at the end of a Regen cycle. I also noticed that when it was stumbling at idle ( in gear foot on brake ) the RPMs were higher than usual, maybe 700 rpm vs the normal 500 rpm.