What does code P1453 mean on BMW vehicles?
The ECU detects an electrical malfunction in the control circuit of the secondary air injection pump relay.
OBD-II Code BMW
P1453 — BMW — Secondary Air Injection Pump Relay Control Circuit Electrical
The ECU detects an electrical malfunction in the control circuit of the secondary air injection pump relay.
Common symptoms
- Increased emissions
- failed emissions test
Possible causes
- Faulty relay
- damaged wiring
- poor electrical connection
Initial recommendation
Inspect secondary air injection pump relay and wiring, replace relay if necessary.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine BMW code P1453 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands