P1221 — Mercedes-Benz — CAN Communication ETC Or ETS Interrupted

P1221 (Mercedes-Benz): CAN Communication ETC Or ETS Interrupted — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

CAN Communication ETC Or ETS Interrupted. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain