Exhaust Back Pressure at Idle . Turbo boost spiking

[BrandonOlsen]

Shut the truck off for 30 minutes. Turned it back on. Idle at 700 like normal. Bump cruise up to 800. Turbo isn’t boosting. Let it run for a little bit and get back in the truck and idle is back up to 800. Turbo wasn’t boosting but sounded like maybe it was just a tiny bit.

- Was on insite to look at log. When opening it up I got “ A Fuel System Fault has occurred which may cause Trip
Information Data to be incorrect. Troubleshoot fault codes as
necessary, Do not replace the ECM. Resetting the Trip
Information data will clear this message.“

But no fault codes in faults