P0507

DTC P0507: Idle Control System RPM Higher Than Expected

NOTE: If DTC P0511 is stored at the same time as DTC P0507, troubleshooting DTC P0511 first, then recheck for DTC P0507.

1. Start the engine. Hold the engine at 3,000 rpm with no load (in neutral) until the radiator fan comes on, then let it idle.
2. Check the engine speed at idle with no-load conditions: headlights, blower fan, radiator fan, and air conditioner off.

Is the engine running at 800 ± 50 rpm?

YES - Intermittent failure, system is OK at this time.

NO - Go to step 3.

3. Turn the ignition switch OFF.
4. Remove the intake air duct from the throttle body.
5. Start the engine and let it idle.




6. Block both the upper and the lower ports (A) in the throttle body with your fingers.

Does the engine speed drop below 850 rpm?

YES - Check the idle speed with a different load condition (electrical, A/C, etc.). If it's out of specification, replace the IAC valve.

NO - Check for vacuum leaks at these parts.
- PCV valve
- PCV hose
- EVAP canister purge valve
- Intake manifold
- Throttle body
- Brake booster hose