128:F05 Fault Code

[rtjohnson1982]

Hey guys, hope everyone is getting ready for Christmas. 2007 International 9200 w/ Cummins ISX and few days ago my check engine light comes on and stays on but truck seems to be operating ok. Code is 128:F05 which I think is egr related but I don’t know anything more than that. Thought about changing the egr valve position sensor but didn’t want go swapping parts without an idea of what might be the problem. Thanks for any info yall could provide as this forum has bailed me out more times than I can count!