What does code P1457 mean on BMW vehicles?
The ECU detects an electrical malfunction in the temperature sensor of the heated catalyst power switch on Bank 1.
OBD-II Code BMW
P1457 — BMW — Heated Catalyst Heater Power Switch Temperature Sensor Electrical (Bank 1)
The ECU detects an electrical malfunction in the temperature sensor of the heated catalyst power switch on Bank 1.
Common symptoms
- Check engine light illuminated
Possible causes
- Faulty temperature sensor
- wiring or connector issue
Initial recommendation
Perform system diagnostics and replace faulty temperature sensor if confirmed.
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
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