P0505
Idle Control System
Powertrain · Generic (all makes)System: Intake Air/Vacuum
Safe to drive short term. Book a repair.
Likely causes
- Dirty throttle body or idle air control valve
- Vacuum leak
What to check first
Clean the throttle body and idle air passages first.
Typical repair cost
$100 – $450
Independent-shop parts and labor for the usual fix. Your price depends on the actual cause and the vehicle.
Next step
General information, not a diagnosis of your vehicle. Repair costs are typical shop ranges, not quotes.