How to Fix P0507 Code: Causes, Symptoms, and Fixes

OBD2 Scanners is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

Code p0507 on the obd scanner screen

If your car has been displaying the Check Engine Light and the code p0507 is flashing on your OBD scanner, don’t worry! You can fix this trouble code yourself by following simple steps. This blog post will discuss the causes of this code and provide common symptoms that you may experience. Read on!

What is Code P0507?

P0507 is a generic OBD2 diagnostic trouble code (DTC) indicating a fault within the idle control system. The Engine Control Unit (ECU) has a specific number of Revolutions Per Minute (RPM) it wants the engine to idle at. When the PCM detects an excessively high RPM rate, the ECU will set code P0506.

Symptoms of Code P0507

When the Check Engine Light illuminates on your dashboard and the P0507 code appears on your OBD scanner, you will experience these common symptoms:

  • Engine idle
  • Fluctuating idle
  • Hard starting
  • Rough idle

Causes of Code P0507

When you experience those symptoms above, you may blame several causes, including:

  • Leak in the Intake air
  • Faulty or corroded IAC valve
  • Carbon buildup on the throttle body
  • Faulty power steering pressure switch
  • Failed alternator

How to Diagnose Error Code P0507?

A thorough inspection and diagnosis are required to fix the P0507 code. However, some people don't know how to start. To diagnose the P0507 code, you will need:

  • OBD scanner
  • Multimeter

Check for Stored Codes

The first step you need to scan for stored codes when diagnosing. Prepare your OBD scanner and locate your vehicle diagnostic port. Connect the OBD scanner to the port and click scan to pull up the codes and see if any other codes are present. 

If there are, address those first. Often, the P0507 code is accompanied by other codes, so note all the codes before proceeding and freeze frame data as it will help diagnose the issue. Don't forget to clear the codes.

Perform a Visual Inspection

The next step is a visual inspection and checking for obvious problems. Check the vacuum lines, hoses, and connectors for damage or leaks. If you're unsure where to start, look under the hood at the engine and see if you can spot anything out of place. If everything looks normal, move on to the next step.

Check the Throttle Body

The throttle controls the air entering the engine. It's located on the side of the engine and has a metal plate with several holes in it. Make sure If no dirt or debris is blocking any of these holes, it will cause problems with airflow and could trigger the P0507 code.

Check the RPM

The RPM sensor measures the engine speed and sends that information to the computer. If it's faulty, it could cause problems with airflow and trigger the P0507 code. Pay attention to the data stream, verify the high RPM, and see whether the system works.

How to Fix Code P0507

If the code is still present after cleaning the throttle body and checking the RPM sensor, you can also try this fix:

Step-by-Step Guide to Replacing the Air Filter

  1. Park your car on a surface level and set the emergency brake to diagnose. Open the hood and disconnect the negative battery cable.
  2. Disconnect the negative battery cable.
  3. Locate the air filter housing and remove the lid. 
  4. Inspect the housing for dirt, leaves, or other debris. If necessary, use a brush or compressed air to clean it out.
  5. Install the new filter and close the lid. Reconnect the negative battery cable and start your car.
  6. Test-drive your vehicle to see if the P0507 code has been fixed. If you still get the same error code, move on to the next step.

Step-by-Step Guide to Replacing the PCV Valve

  1. First, locate the PCV valve. It's usually on or near the top of the engine, and it will have a hose coming off it.
  2. Next, use a socket or wrench to remove the old PCV valve.
  3. Now, take your new PCV valve and screw it in place. Make sure it's tight so it doesn't leak.
  4. Finally, reattach the hose and start up your car. Test-drive it to see if the P0507 code has been fixed.

Step-by-Step Guide to Replacing the Power Steering Pressure Switch

  1. Locate the vehicle's battery and disconnect the positive and negative battery cables.
  2. Lift the vehicle with a hydraulic lift or jacks and jack stands.
  3. Remove a few components, including the engine cover, air filter and hoses, and the battery.
  4. Remove the electrical harness attached to the steering power switch.
  5. Press on the tabs on the sides of the electrical harness to remove it.
  6. Using the wrench, remove the power switch attached to the hydraulic line.
  7. Ensure that the old power steering switch is the same as the new one.
  8. Install the new power steering switch.
  9. Install the new switch and reconnect the hose. Make sure it's tight so it doesn't leak.
  10. Startup your car and test drive it to see if the P0507 code has been fixed.

Common Mistakes When Diagnosing the Code P0507

Some people tend to keep making the same mistakes when diagnosing a specific issue on their vehicle, which is unavoidable most of the time. However, it doesn't have to be that way to avoid unnecessary and expensive repairs. Here are some mistakes to avoid when diagnosing this error code:

  • Still driving their car even when the Check Engine Light comes on, thinking it'll go away.
  • Another common mistake is not checking all the hoses and connections before replacing the PCV valve.
  • Not checking if everything is tight and secure before putting in a new one.
  • Checking only the vacuum hose for leaks instead of the entire intake system.

Code P0507 FAQs

1. Is the code P0507 serious?

This code is not considered a serious issue; however, anything that causes you drivability issues must be fixed as soon as possible to avoid accidents.

2. Can I drive my car with this code?

Anything that triggers your Check Engine Light should be addressed before driving the car. Because knowing your vehicle is in good condition is always better (and safer) than not.

3. How much does the P0507 code repair cost?

The average cost to fix the P0507 code is $100 to $200, but this can vary depending on the vehicle and the mechanic.

4. Can you prevent a P0507 code from happening?

There is no sure way to prevent a P05007 code from happening, but there are some things you can do to minimize the chances.

Ensure all your hoses and connections are tight and secure, and check for leaks regularly. Also, be sure to replace the PCV valve when it's necessary.

5. Can I fix it at home?

It is possible to fix a P050705 code at home, but it's not recommended unless you have experience with car repairs.


If you're experiencing problems with your car and are seeing the Check Engine Light come on, it's essential to diagnose and fix it. The P0507 code is just one of many codes triggered by different issues with your vehicle.

It may not be as serious as the others but still needs to be fixed as soon as possible. With patience and the right tools, you can fix it yourself or take it to a mechanic to have them do it for you. It could save you time and money in the long run. 

We hope this article helped provide some basic information about what the P0507 code is and how to fix it. Thanks for reading!