All codes
Service call
SC790
ADF communication error
BADF / ARDFCommon field call
Level B — stop, power-cycle may clear
First check
Engine lost the ADF. Hinge cable first — especially after an ADF lift or a slam. Then ADF board.
What it means
ADF communication error. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- Engine lost the ADF. Hinge cable first — especially after an ADF lift or a slam. Then ADF board.
On-site steps
Parts to have on the truck
- ADF hinge harness
- ADF board
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.