Diesel10

Thanks for the info there are 108k miles on the truck and it idles and runs great. I read some stuff about bad connections at the frp sensor I'm going to put some die electric gel on the pins and inspect that. Do you know what the frp reading and voltage reading is supposed to be at idle I think that's where the code would set. I'm hoping it would be a sensor then I injectors the cost between the two is a big one. Thanks

I have a 2010 Dodge Ram 2500 6.7L 6 speed trans all stock. I got a code p0191 for fuel performance code I cleared it and it takes weeks to a month if it comes on again. It only came on twice and has been off for weeks now truck runs great ehat should fuel rail pressure be at an idle. Could idling a long time cause this using remote start a lot I doubt it could but looking for ideas and are most people fixing this code with software updates the sensor is expensive and if it ran rough or something it would be easier to track down . Thanks