Skip the auto shop - Our mechanics make house calls

Q: Code P1509

asked by on

I am getting code P1509.

A: The code P1509 is a problem with the idle a...

The code P1509 is a problem with the idle air control valve or circuit. The most common failure is an idle air control valve internal short. It is possible that the valve may need to be replaced. I recommend having the system diagnosed by a mechanic, like one form YourMechanic, to inspect the issue. They will be able to let you know what is in need of repair and replace your idle air control valve if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Are crankshaft pulleys and harmonic balancers the same thing? I have a 1998 Buick Century custom and it is wobbling and making a loud noise.

Hi, thanks for writing in. On your vehicle, the pulley is actually manufactured into the harmonic balancer. If the pulley is wobbling, it would be best to have a certified mechanic, like those available at YourMechanic.com, take a look at...

Q: Problem with shifting positions

It may very well be that your vehicle has a problem that is causing reduced power output. Some such things could be: Faulty fuel pump Faulty oxygen sensor Vacuum leak When any of these occur, the...

Q: No power after battery replacement

Hi, if you have a new battery and there is still no power coming to the car then there is a chance the main fuse has blown. This fuse protects the main electrical components from surges in power and will...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...