P1402 — BMW — Heated Catalyst Power Switch Overtemperature Condition Bank 1

P1402 (BMW): Heated Catalyst Power Switch Overtemperature Condition Bank 1 — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Heated Catalyst Power Switch Overtemperature Condition Bank 1. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain