OBD-II code guide
P0507 Idle Control System RPM Higher Than Expected
P0507 means idle speed is higher than the computer expects.
What it means
The engine is getting more air or throttle opening than expected at idle.
Common symptoms
- High idle
- Rough idle
- Surging
- Check engine light
- Harsh shift into gear
Likely causes
- Vacuum leak
- Dirty throttle body
- Stuck idle control valve
- PCV leak
- Throttle relearn needed after service
First checks
- Listen for vacuum leaks.
- Inspect intake hoses.
- Review recent battery disconnect or throttle cleaning.
- Check for lean codes with high idle.