P1453 — BMW — Secondary Air Injection Pump Relay Control Circuit Electrical

P1453 (BMW): Secondary Air Injection Pump Relay Control Circuit Electrical — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Secondary Air Injection Pump Relay Control Circuit Electrical. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain