Lifehacks

How do I fix my P1509 code?

How do I fix my P1509 code?

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.

Why does my Honda Civic idle so high?

Malfunctioning Throttle: A malfunctioning throttle system can cause both a high or low idle as well as an engine stall. A dirty air intake or cracked air intake tube is often the culprit.

What is code P1509 mean?

|P1509 Meaning The target idle speed is in the Engine Control Module (ECM) memory for various engine conditions (coolant temperature, A/C operation and so on). The ECM keeps the actual idle speed at the target idle speed by switching the Idle Air Control Valve IACV) ON/OFF to control the intake airflow.

How do I fix the engine code P0135?

What repairs can fix the P0135 code?

  1. Replacing the O2 sensor.
  2. Repairing or replacing the wiring or connection to the O2 sensor.
  3. Replacing the fuse to the heater circuit after the short is corrected.

What are symptoms of a bad IAC?

When the idle air control valve fails, it inhibits the flow of air through the engine. When the car can’t receive air, it leads to engine stalling. The severity of this symptom can range from occasional stalling at first, to stalling immediately after ignition.

What are signs of a bad idle air control valve?

Usually a bad or failing idle control valve will produce a few symptoms that can alert the driver of a potential issue.

  • Irregular idle speed. One of the most common symptoms associated with a problematic idle air control valve is irregular idle speed.
  • Check Engine Light comes on.
  • Engine stalling.

Why does my vehicle idle high?

In modern vehicles, engine idle speed is most often controlled by the idle air control (IAC) motor. When your car’s throttle is malfunctioning, this can cause your car to stall or idle high. Often this is a result of dirt buildup in the air intake. Other times it can be a problem with a cracked intake tube.

How do you fix a surging idle?

Turn the engine off again, and reattach the air intake duct work to the throttle body. Start the engine and rev and hold to 1,500 to 2,000 rpm until no white smoke is coming out of the exhaust pipe. Cleaning the Idle Air Speed Control Valve with aerosol throttle cleaner can often solve an idle problem.