All codes
Service call
SC174
Scanner DA2 abnormal (repeat)
BScanner / optics
Level B — stop, power-cycle may clear
First check
Treat as SC171 — SBU.
What it means
Scanner DA2 abnormal (repeat). Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- Treat as SC171 — SBU.
On-site steps
Parts to have on the truck
- SBU
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.