P0506 on BMW — Idle Control System RPM Lower Than Expected
BMW
Verified1 source
1 source
- Official data (NHTSA)official_feed
What P0506 means
Caution — monitor closely
Idle speed sits persistently below target — risk of unintended stall.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Vacuum leak or dirty throttle body
Symptoms
- Повышенный расход топлива
- Engine stalls at idle
What to check first
- Clean throttle body
- Smoke-test for vacuum leaks
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