I have had this issue intermittently for years now, but am unable to replicate it. The codes are often different but usually about losing comms. My thought is that under heavy acceleration, between the transmission shift and AWD kicking in, plus the traction control, throttle adjustments, etc, the likely underpowered computer and "networks" get overwhelmed, and it forces everything into limp mode. May try changing out the transmission and/or PTU fluids, but it's been behaved the last few months.