Engine Error
P0507
Idle Control System RPM Higher Than Expected
Severity
Low
Symptoms
High idle speed, erratic idling, engine surging
Common Causes
- Vacuum leak
- Dirty throttle body
- Failing Idle Air Control (IAC) valve
- EVAP system leak
How to Fix
- 1 Clean the throttle body
- 2 Perform idle relearn procedure
- 3 Search for vacuum leaks
- 4 Replace IAC valve
Estimated Repair Cost
USD
$100
–
$400
Throttle body cleaning: $100; IAC valve: $200 - $400