P0505
Medium severityIdle Air Control System
Quick answer
P0505 (Idle Air Control System) means: The system that controls idle speed isn't keeping idle stable. Diagnose soon; a throttle-body clean often helps. Typical Malaysia repair cost: RM200–RM800 (approximate).
Symptoms
- •Stalling at idle
- •Rough or high/low idle
- •Check engine light
Likely causes
- •Dirty throttle body / IAC valve
- •Vacuum leak
- •Faulty IAC
Can I drive?
Diagnose soon; a throttle-body clean often helps.
Estimated repair cost (Malaysia)
RM200–RM800 (approximate)
This is general information, not a diagnosis. AutoMalaya OBD helps explain your car’s actual scan data; a qualified mechanic may still need to inspect the vehicle.