Electrical
Code P0505
Idle Air Control System Malfunction
Plain English Meaning:Idle speed not properly controlled
⚠️
Yellow: Drive with Caution
Can stall
What You'll Notice (Symptoms)
- •High or low idle stalling
Most Common Causes
1Dirty throttle body faulty IAC valve
Verified Repair Playbook
Required Mechanic Tests
A qualified shop should perform these tests before replacing any parts to ensure they aren't guessing:
Inspect throttle body clean IAC
Typical Fix Paths & Estimated Costs
Repair idle system $100–$400
Fair Pricing Guides
Check our database for average parts, labor, and expected repair costs before heading to a mechanic.