All codesService call
SC498
HVPS / bias error
BTransfer / HV
Level B — stop, power-cycle may clear
First check
High-voltage catch-all. Chase 302/401/441 in history first, then HVPS.
What it means
HVPS / bias error. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- High-voltage catch-all. Chase 302/401/441 in history first, then HVPS.
On-site steps
Parts to have on the truck
Confirm the subcode and part number in the FSM for this serial. Raicoh is a field companion, not a replacement for the book.