All codes
Service call
SC420
ITB / PCU cleaning motor lock
BTransfer / HV
Level B — stop, power-cycle may clear
First check
Cleaning motor locked. Blade flip or wrap on the ITB cleaner.
What it means
ITB / PCU cleaning motor lock. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- Cleaning motor locked. Blade flip or wrap on the ITB cleaner.
On-site steps
Parts to have on the truck
- Cleaning motor
- ITB cleaning unit
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.