Nissan Frontier P0507: Idle Air Control – RPM Higher than Expected

P0507 It is quite common OBDII trouble code. The code will be triggered if the engine idle speed is greater than 200 rpm. The generic code means it is the same as the other codes. Nissan Frontier Like any other vehicle.

P0507 Symptoms

P0507, unlike many OBDII codes, will usually be apparent to you while driving. The following symptoms are typical for Frontier

• Coming Soon: Service Engine Light– The reason why you are here.
• Accelerate Idle Speed– Assuming that the code has been thrown due to a legitimate issue, you should notice the engine running faster when not pushing the gas.
• Thud Going Into Drive– Transmissions really don’t like to shift from park to drive at an RPM higher than idle. You may feel the entire vehicle shake when you shift into P0507.
• Vehicle takes off faster– With the engine idling higher, people report feeling the vehicle take off when releasing the brake pedal. It can increase the risk of driving.

Nissan Frontier P0507 Causes & Diagnosis

Many possible causes of P0507 exist. While the code specifically mentions the “Idle Air Control System”, it would be a mistake to just go ahead and replace it without a little due diligence. The code is not always caused by the idle air control valve.

These are the top causes of P0507 problems in Nissan Frontier. We also have the information you need to fix them. Be aware that model years can vary. You might start with looking at a Vacuum leak You can then move forward.

Vacuum Leak

The Frontier will idle more often if the vacuum system is leaking. The vacuum system can leak, allowing more air into the combustion chamber. This allows for slightly higher combustion rates, raises RPM and throws code.

How do you find a leak in your vehicle's vaccum? (Popular Mechanics, Article)
In less than a minute, how to find a vacuum leak (2CarPros, YouTube)

Vacuum leaks can be caused by bad things vacuum hoseIt is the Intake is endless, EGR SystemYou can find it anywhere that air is flowing. It’s not hard to find a vacuum leak though. Use the resources above and you’ll find it in no time.

Valve to control the idle airflow

The majority of modern fuel-injected engine are fitted with an idle air control valve. However, not all are. If you have determined that you don’t have a vacuum leak, the IAC is a great second place to troubleshoot P0507.

How to diagnose an IAC valve (Autozone Guides)

Throttle body

The throttle body can be opened and closed millions of times during the lifetime of a car's engine. It can collect dust from all the air passing through it. It can alter the characteristics of your vehicle's idle. When dirty, you’ll often feel the vehicle almost stall before the computer compensates and opens it a little more.

Alternativly, the throttle body may have been damaged and may stop regulating the airflow properly. In this case, the code could be thrown.

How to spot signs that your throttle body is going down (Repair Pal)
What to do if your throttle body is dirty or bad? (YouTube Auto Repair Youtube)

Conclusion

The P0507 problem is serious. Due to the unsafe nature of driving with an engine that is revving higher than it’s supposed to, we recommend having your Frontier serviced as soon as possible. You're welcome!