Q: What does code P2004 mean?

asked by on

what does cause P2004 CODE an were is it. My car has a manual transmission.

Diagnostic trouble code P2004 signifies a problem with a segment of the engine’s air intake and control system, technically known as the intake manifold runner control (IMRC). In practical terms, the code means that the engine is not getting the right amount of air to perform efficiently. There are quite a few sensors, as well as mechanical components, that can account for this fault.

Here is a list of some of the possible root causes for code P2004: a defective IMRC solenoid; IMRC solenoid wiring that has shorts, has breaks, or is frayed; IMRC solenoid circuitry that has shorted or is open; an IMRC solenoid connector that is corroded; IMRC butterfly valve plate screws that are loose or broken; broken IMRC butterfly valve plates; IMRC butterfly valves plates that have disconnected from the IMRC actuator; a clogged vacuum control solenoid vacuum filter; debris in the vacuum control solenoid; vacuum lines that are disconnected or broken; or carbon buildup on the IMRC butterfly valve plates. If none of the aforementioned defects account for the fault, there are three other systems that should then be evaluated as well. Check for trouble codes that have been stored by the powertrain control module (PCM) in relation to the exhaust gas recirculation (EGR) valve, the mass airflow (MAF) sensor, and the barometric pressure (BARO) sensor.

If the fault is due to the mechanical butterfly valve in the intake coming loose, that could result in big problems as this is a metal part that could potentially get sucked into the engine causing further damage. Consequently, this is not an issue that can be put off in terms of getting the problem diagnosed and repaired. Also, while the fault exists, you are likely getting lower gas mileage, which of course is costly.

A certified technician, such as one from YourMechanic, can evaluate the fault during a Check Engine Light inspection and let you know which component(s) has failed and then get the vehicle repaired for you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. What does code P2004 mean?

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: Fuel door release open

Hey there. This is an electrical release mechanism, consisting of the switch in the glove compartment, and a solenoid that is inside the fuel door itself. Starting with the fuse for this circuit, follow the "power trail" to see which...

Q: code p2015 and p2004

The codes are telling you the intake manifold runners are open. They are normally closed while driving and only need to be open when the engine is off. The intake manifold depends on them being closed for proper vacuum. This...

Q: Car is overheating and leaking antifreeze.

Besides the item you listed you would need to have the intake manifold, head gaskets, hoses checked. This engine has had all of these components fail. Your cooling fans will need to be checked for proper operation also. My recommendation...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...