P1005 code — how to fix error fast

Facing an OBD2 code like P1005 can be pretty tough for car owners that aren’t informed of the P1005 code meaning and the way it can damage a vehicle. Sadly, it’s one of the codes that could directly impact your engine, and that’s something you’d want to avoid due to expensive repair costs.

Luckily, it’s possible to avoid all that by simply following this comprehensive guide made by our team of seasoned automotive experts. We’ll give you an overall idea of how to deal with this code by going over the main reasons behind it, as well as recommending you a few ways of determining the root source and fixing the issue for good.

Why you can trust REREV’s OBD2 code advice: Our automotive expert researchers with experienced mechanics undertakes a thorough research methodology to deliver precise insights on OBD codes. Find out more about OBD2 codes research process..

What does the P1005 code mean?

The P1005 code stands for “Intake Manifold Runner Control Circuit/Solenoid Valve Control Circuit.” It refers to a malfunction in the IMRC system, which is responsible for controlling the air intake into the engine. This malfunction can cause a range of issues, including reduced engine performance, poor fuel economy, and increased emissions.

Symptoms of this code can vary depending on the severity of the issue. Some common symptoms include rough idle, engine misfires, decreased power and acceleration, and increased fuel consumption. If you notice any of these symptoms, it is crucial to have your vehicle diagnosed as soon as possible.

What causes the P1005 code?

So far you may assume that the code in your car has been triggered by a faulty IMRC control circuit, but that doesn’t have to be the case necessarily. It takes knowing more about all the possible reasons of the code so you can find the exact culprit in your case, which is why we’ll give you a complete list:

Faulty IMRC solenoid

The IMRC solenoid is responsible for controlling the air intake into the engine. A faulty solenoid can lead to a malfunction in the IMRC system, triggering the P1005 code.

Damaged wiring

Wiring damage can cause a short circuit in the IMRC system, which could lead to the code’s activation. Wiring issues are more common than you may think when it comes to this code, so it’s at least a good thing that it’s easy and relatively cheap to fix it.

Failed IMRC actuator

The IMRC actuator is responsible for controlling the movement of the intake manifold runners. If the actuator fails, runners won’t be able to properly control the airflow in the intake manifold and that could lead to the code triggering.

Clogged intake manifold runners

Clogged intake manifold runners can prevent the proper flow of air into the engine, leading to a malfunction in the IMRC system and the code activation.

Which car models does the P1005 code affect the most?

It’s difficult to say which models are more prone to this code than others since most modern-day vehicles use an IMRC runner control system. However, we’ve scanned some NHTSA reports to give you a rough idea of commonly affected models:

• Ford F-150: This popular pickup truck has been known to experience issues with its MAP sensor, which can trigger the P1005 code.
• Jeep Grand Cherokee: Some models of the Grand Cherokee have also been known to experience issues with the MAP sensor, which can cause the code to appear.
• Dodge RAM: This one is yet another pickup truck that has a lot of issues with the code and they are mostly triggered by a faulty IMRC actuator.

How to diagnose the P1005 code

To diagnose the P1005 code, you will need specialized diagnostic tools, such as an OBD-II scanner. You can follow these steps to properly diagnose the code and determine the source of the issue:

Check for other codes

Before diagnosing the P1005 code, you should check for other codes that may be present. This step can help identify any underlying issues that may be contributing to the code.

Inspect the IMRC system

Inspect the IMRC system for any visible signs of damage or wear. Check the wiring for any signs of damage, and ensure that all connections are secure.

Use an OBD-II scanner

You can use an OBD-II scanner to read the code and any other closely related codes to get a better understanding of what’s causing it. This step can help identify the specific issue causing the code as well as give you some pointers as to how you can fix it if you read some other related codes with precise explanations of the problem.

Perform diagnostic tests

Finally, you can perform diagnostic tests, such as the IMRC system test and the IMRC solenoid test. These tests can help identify the specific issue causing the code but it’s best to leave these to a trusted mechanic if you don’t have much prior experience.

How to fix the P1005 code

Once you’ve diagnosed the issue behind the code in your car, it’s time to get to the point and use one of our recommended solutions to fix and remove the code. Depending on the culprit, these are some of the most commonly-used solutions for the code:

Replace the IMRC solenoid

If the IMRC solenoid is faulty, replacing it should fix the issue and the runners will once again be able to properly operate within your engine. Replacing the solenoid is often inexpensive, but it can range up to $300 depending on the make and model of your vehicle.

Repair damaged wiring

If there is wiring damage, it will need to be repaired or replaced. This step can require specialized knowledge and tools, and it is recommended to seek professional help.

Replace the IMRC actuator

Replacing a faulty IMRC actuator is one of the most common ways of fixing this code since the actuator is often prone to failure in certain IMRC systems. This mostly happens in vehicles we’ve outlined above and we recommend you rely on the help of a trusted mechanic to replace this component if this happens with your car.

Clean the intake manifold runners

If the intake manifold runners are clogged, they will need to be cleaned. This step can be done at home with specialized products and it’s best to consult a mechanic for precise advice on which cleaner to use for your vehicle model.

How to prevent the P1005 code

Preventing the P1005 code from appearing in your vehicle can be achieved through proper maintenance and driving habits. Here are some ways that drivers can prevent the P1005 code from appearing:

• Regular oil changes and inspections of the air intake system
• Cleaning the IMRC runners on time
• Using high-quality fuel
• Avoiding harsh acceleration

By doing these and also avoiding overloading your vehicle, you can ensure that the car keeps running smoothly without any air intake issues.

Our take

Overall, the P1005 code is a pretty common issue that most drivers could face sooner or later within the lifespan of a car. To avoid having the IMRC system fault affect your engine so badly that a rebuild is needed, it’s best to rely on pieces of advice laid out in this guide to properly handle the situation and remove the code.