OBD codes / P0506
P0506
ModerateIdle Air Control System RPM Lower Than Expected
Get it looked at soon to avoid further wear.
Likely causes
- dirty throttle body
- vacuum leak
- IAC valve
Common fixes
- clean throttle body
- check for leaks
Seeing P0506 on your car? Get a diagnosis specific to your exact year, make and model.
Diagnose P0506 for my vehicleGeneric OBD-II reference. Manufacturer-specific behavior varies — confirm with a scan tool and, for safety-related codes, a professional inspection.