Table of Contents
What does P1506 mean?
The P1506 code means that the engine idle is out of factory specification. Sometimes the Idle Air Control (IAC) may have carbon built up. Disconnect the car battery, remove the valve, clean, re-install valve, and drive the vehicle for about 5 minutes with the headlights and A/C ON to get the idle relearned.
How do you diagnose an idle air control valve?
Look at your dashboard; if the check engine light is on in conjunction with idle issues, it may be because the idle control valve is malfunctioning. The check engine light looks like a simple drawing of an engine. A check engine light in conjunction with idle issues can be indicative of a faulty idle control valve.
Where is the idle control sensor located?
Locating the Idle Air Control Valve The IACV is usually located on the intake manifold near the back of the throttle body.
How do I reset my idle control valve?
You can reset the idle air control (IAC) valve by turning the car on, putting the car into park, pressing the brake down, then pushing the gas pedal down, counting down about 5 seconds, turning the car off, waiting 10 seconds and start the car again, checking to see if the car is idling properly.
What are symptoms of bad IAC?
Below are some of the most common symptoms of a faulty IAC:
- Illuminated Check Engine Light.
- Incorrect Idle Speed.
- Stalling.
- Engine Won’t Start.
- Check for Diagnostic Trouble Codes (DTCs)
- Perform a Visual Inspection.
- Test the IAC Valve (Without an OEM-Level Scan Tool)
Can idle air control valve be cleaned?
How do you clean an IAC valve? After relocating the IAC valve, you need to unscrew it and detach all the wires. You can clean it by soaking it in gasoline and blowing compressed air into it. Then, reattach it with the screws and reconnect the wires.
How do I fix idle control system malfunction?
What repairs can fix the P0505 code?
- Replacing the IAC valve and cleaning the throttle body and passages.
- Removing carbon from throttle body and IAC passages and clean IAC.
- Repairing a vacuum leak in the engine intake manifold vacuum system or gaskets.
What happens if you unplug IAC valve?
Disconnecting the IAC while the engine is idling shouldnt cause much of a change. The IAC will remain in the position it was in, and therefor the engine will continue to run fine so long as it’s air requirements don’t change.
Can you clean an idle air control valve?
What sensor controls idle speed?
An idle air control valve, also called an idle air sensor control motor, is an electrically operated valve that controls the amount of air that bypasses the throttle plate in cars with a fuel injection system [source: Autozone]. This causes the idling speed of the engine to change as needed.
How do I reset my idle speed?