U1202 — Subaru — High Speed CAN Communication Bus Off

U1202 (Subaru): High Speed CAN Communication Bus Off — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

The high-speed Controller Area Network (CAN-HS) bus is inactive, preventing system-wide data exchange. Manufacturer-specific definition; confirm applicability in the service information for the exact vehicle.

Affected system: Network