All codes
Service call
SC559
Consecutive fusing SC
AFusingCommon field call
Level A — stop, SP reset after repair
First check
Read SC history. Fix the original fusing code, then SP5-810.
What it means
The engine saw too many fusing SCs in a short window and locked out. There is an underlying 541–557.
Likely causes
- Repeated fusing SC
- Unrepaired 541–557
On-site steps
Parts to have on the truck
- Per the underlying fusing SC
SP / reset
SP5-810-001 after the root fusing repair.
Related procedures
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.