I recently swapped my CP4 to a CP3, and now I’m in trouble.
The truck will start rough most of the time, but it seems to be okay once running.
Every once in a while, it starts without any issue.
I get the red lightning bolt and check the engine light once it starts.
That’s when it comes up with a message service throttle valve soon.
I checked it with a code scanner and got a P0340 code which I reset and came back.
Hopefully, someone has some insight.
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