P0507
P0507 Idle RPM Higher Than Expected
P0507 means the engine is idling above the target RPM even though the computer is trying to control idle speed.
How urgent is P0507?
High idle can make the car harder to control at stops and may point to an air leak or throttle issue.
Common symptoms
- High idle
- Surging idle
- Check engine light
- Hard shifts into gear
- Whistling vacuum leak sound
Likely causes
- Vacuum leak
- Dirty throttle body
- Sticking throttle plate
- Idle air control valve issue
- PCV leak
What to check before replacing parts
1
Check for vacuum leaks
2
Inspect and clean throttle body if appropriate
3
Check PCV hoses
4
Review throttle/idle data
5
Perform idle relearn when required
Use the code with symptoms
A code points at the system, not always the failed part. Add your vehicle, mileage, symptoms, and whether the check engine light is steady or flashing so the AI diagnostic can narrow the next step.