Jeep Renegade P0449 - Vent Valve Solenoid Circuit Malfunction

The issue is quite common with Jeep Renegade Is the Code P0449. This is the code that you get when you connect your Renegade to an OBD2 scanner. The evaporative emission control (EVAP), system is covered by P0449. It is frequently found alongside, or closely related to, other codes such as P0446, P0420 and P0455.

P0449: EVAP System – Vent Valve Solenoid – Circuit Malfunction

The P0449 problem is not usually a threat to your Renegade's driveability. Certainly anytime the service engine soon light is on, it’s good to deal with it as soon as possible though. You can also use a scanner to check if your valve is working correctly. They are common in shops. There’s a link towards the bottom the page on exactly how to perform a quality diagnosis with a scan tool.

Jeep Renegade P0449 Definition

P0449 stands for a universal OBDII Trouble Code. It means that no matter what make or model vehicle it is, P0449 will be the same code (Renegade, or not) as long as the vehicle was made after 1996.

If P0449 is displayed, it means that either the solenoid circuit or the valve controlling the evaporation system are not working correctly. Depending on your vehicle's model, the EVAP cycle fuel vapor out of the tank into an intake manifold. This system can fail to properly deal with fuel vapor if it malfunctions.

ECM (Engine Control module) has identified a problem in the circuit that controls the vent which releases fuel vapor. The service engine will soon follow up on this.

Jeep Renegade P0449 OBDII Code Symptoms

A P0449 Code will not usually be associated with other noticeable symptoms. The smell of gas The service engine soon light. It is possible to notice a slight dip in fuel economy.

The fuel tank and fuel filler tubes should smell particularly strong.

The EVAP system is responsible for fuel vapors. If these vapors are leaking from the system, you’ll often smell them faintly while operating the vehicle.

The Trouble Code for Renegade P0449

The P0449 code can be triggered by many factors in your Jeep Renegade. These are some of the more common issues that can trigger the P0449 code. Here's a video explaining the process.

• Fuel Cap– A bad fuel cap can cause the code to be thrown for sure. Often, you’ll get a message informing you that the fuel cap is off even when it is on. It may be worth your time to get that message and a P0449 to ensure you don't waste any money.
• EVAP System Hose– The hose that carries the fuel vapor from the fuel tank to the intake manifold can begin to leak. This can lead to the P0449 error code. It should have a hole or tear. This is the leading cause of code.
• Vapor Canister Purge Valve– One of the most common causes of the P0449 code is the vapor canister purge valve. It’s really easy to replace. There are some clips you will need to look for and then remove. Here’s How to test a purge valle (YouTube).
• Wiring and Fuse Problems– If the wiring going to the valve has been compromise, it’ll lead to the P0449.
• Fuel Tank Sending Unit– It is possible for the gasket that attaches the fuel sending unit to the gas tank to go bad. It can lower the tank pressure, which could throw out the code.
• Fuel Filler Neck– There is often a gasket where the fuel filler neck connects with the gas tank. The gasket may dry out especially if the vehicle is in dry conditions. When it dries out, the fuel tank can’t hold pressure anymore, it may erroneously throw P0449.

P0449 Diagnosis- Jeep Renegade

The mechanic can use a range of tools to determine the cause of your Jeep Renegade P0449. The most commonly used methods to diagnose this code are:

• A mechanic will examine the gas cap and verify that it is able to withstand high pressure. If you are getting a warning that your gas cap is off, even when it’s on, replacing it will more than likely clear this code.
• A mechanic will often check to make sure there are no other codes. A mechanic will usually check for additional trouble codes to help diagnose the problem. That’s because when they appear together in certain combinations, there will often only be only a few conditions that will throw any combination of codes at one time.
• Once the mechanic has determined the trouble codes associated with P0449, he or she will usually Take a look at the EVAP system. It includes the purge valve and line as well as the canister.
• Monitoring and checking the fuel tank pressure is a must.
• After for the checks and fixes listed above, the mechanic will perform two tests: A smoke test, and they’ll use a scan tool to confirm that the EVAP solenoids and valves are operating properly.

Have you got trouble with your computer? Here’s a Super technical video It is very detailed in diagnosing P0449.

Most common P0449 fixes

Below are the top Renegade P0449 fix options:

• Replacement of gas cap
• Replacing EVAP lines
• Vent valve replacement
• Wiring repair

It is best to begin with the gas cap, and then work your way up to the fuel tanks. The gas cap is the most difficult and cost-effective item to replace.

Here’s a great video on How to check your gas cap.

We wish you all the best in finding out why your Jeep Renegade is throwing the code P0449. This should help. You can add any additional information by leaving a comment.

Are P0449 Serious Concerns?

While P0449 is not going to cause the Renegade’s engine to stop running, it should not be treated lightly. Fuel leaks could be a problem. You should pay extra attention to the level of your fuel tank and ensure that you're not leaking fuel. It is best to have it checked and/or dealt with immediately.