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P0505: Idle Air Control System
Severity: Medium Drive gently and get it diagnosed soon.
What does P0505 mean?
The idle control system is not working as expected.
Generic OBD-II definition: Idle Air Control System. Confirm applicability in your vehicle service information.
Common causes
- Dirty throttle body or idle air control valve
- Faulty IAC valve
- Vacuum leak
Symptoms
- Erratic or stalling idle
Can I keep driving with P0505?
Severity: Medium Drive gently and get it diagnosed soon.
If the check engine light is flashing or the car runs badly, stop driving and have it checked.
Typical fixes
- Clean throttle body/IAC
- Check for vacuum leaks
- Replace IAC valve