All codes
Service call
SC816
Energy saver / controller comms
BController / HDD
Level B — stop, power-cycle may clear
First check
Wake from energy saver failed. Power cycle. Recurring with 672/819 → I/F or controller.
What it means
Energy saver / controller comms. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- Wake from energy saver failed. Power cycle. Recurring with 672/819 → I/F or controller.
On-site steps
Parts to have on the truck
- Controller
- Engine I/F
Related codes
Confirm the subcode and part number in the FSM for this serial. Raicoh is a field companion, not a replacement for the book.