What does code P1477 mean on BMW vehicles?
The ECU detects that the reed switch inside the leakage diagnostic pump did not open correctly.
OBD-II Code BMW
P1477 — BMW — Leakage Diagnostic Pump Reed Switch Did Not Open
The ECU detects that the reed switch inside the leakage diagnostic pump did not open correctly.
Common symptoms
- Check engine light illuminated
Possible causes
- Mechanical failure of LDP reed switch
Initial recommendation
Inspect leakage diagnostic pump operation and replace 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
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