Speed and idle control
P0507 — Idle Control System RPM Higher Than Expected
The engine idle speed is higher than the target the ECU sets. Extra air is usually entering the engine, or the idle control cannot close properly.
Common causes
- Vacuum or intake air leak
- Dirty or sticking throttle body or idle air control valve
- Faulty throttle position sensor
- Faulty coolant temperature sensor
- PCV valve stuck open or leaking
Symptoms
- High idle speed
- Idle that hunts up and down
- Engine revs on its own
- Check engine light
How to check
- Smoke-test the intake for leaks
- Clean the throttle body and idle air valve
- Check hoses, PCV valve and brake booster line
- Check throttle position and coolant temperature readings
Can you keep driving?
Usually drivable, but a high idle can make braking and parking less smooth. Repair it soon.
Related codes
Frequently asked questions
- What does P0507 mean?
- The engine idles faster than the ECU's target.
- What is the most common cause of P0507?
- A vacuum or intake air leak is the most common cause.
General reference information. It does not replace a diagnosis on your own vehicle. The same code can have different causes depending on make, model year and engine; check the manufacturer's documentation or ask a technician with a scan tool.