P0507 on a Hyundai: Causes, Fixes & Repair Cost
🟠 Moderate severity · drivable
Drivable, but the engine idles too fast, which wastes fuel and makes stops feel odd.
What P0507 means on a Hyundai
On a Hyundai, P0507 means the engine idles higher than the computer expects. Carbon in the throttle body or a vacuum leak lets too much air in at idle. The car still drives, but the high idle wastes fuel.
Is P0507 common on Hyundais?
P0507 appears on Hyundais like the Elantra, Sonata, Tucson, and Santa Fe, usually as mileage climbs. The throttle body collects carbon, and rubber vacuum hoses dry out and crack. Older models with an idle air control valve can also trigger the code.
Commonly reported on: Elantra, Sonata, Tucson, Santa Fe.
Symptoms
- Check engine light is on
- High idle speed
- Engine surges at idle
- Car creeps forward at stops
Common causes
- most common: Carbon buildup in the throttle body
- common: Vacuum leak
- common: Faulty idle air control (IAC) valve on older models
- less common: Leaking PCV valve or hose
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Clean the throttle body | Yes | $10–40 |
| Find and repair vacuum leaks | Yes | $10–100 |
| Replace a faulty idle air control valve | Yes | $50–200 |
Frequently asked questions
Other common Hyundai codes
P0507 on other brands
Looking for the full (non-brand-specific) guide? See the P0507 code page →
Browse all Hyundai codes: Hyundai hub →
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.