Dodge Dakota Code Diagnosis

This is one of the most commonly encountered trouble codes for the Dodge Dakota The Code P0455. The trouble code refers to a number you receive when your Dakota is plugged into an OBDII scanner. The trouble code P0455 indicates that there are a Large leak It is part of the evaporative emission controller system. It is frequently found in conjunction with other codes such as P0420 or P0441.

 

Dodge Dakota P0455

 

Normally, P0455 does not pose a threat to your Dakota's driveability. Certainly anytime the service engine soon light is on, it’s good to deal with it as soon as possible though. It's often associated with P0442. For more information, see Dodge Dakota OBDII code P0442.

 

Índice de Contenido
  1. Dodge Dakota Definition P0455
  2. Dodge Dakota OBDII code Symptoms
  3. Dakota P0455 Troublecode Causes
  4. Dodge Dakota Diagnosis - P0455
  5. Most common P0455 fixes
  6. Do you consider P0455 to be a serious concern?

Dodge Dakota Definition P0455

P0455 refers to a general OBDII trouble code. It means that no matter what make or model vehicle you have, this code will always mean the same (Dakota). Technically speaking, it stands for:

System Gross Leak – Evaporative Emission System

The EVAP captures any fuel vapor in the fuel tank. They are then sent to the engines intake for ignition. When there is a large leak in the Dodge Dakota’s EVAP system, it will throw the P0455 OBDII Code.

 

Dodge Dakota OBDII code Symptoms

P0455 OBDII Code Diagnosis Dodge Dakota
The only indication that P0455 has been activated is the soon-lit service engine.

A P0455 Code will usually not cause any symptoms except the ones listed below. 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.

 

Dakota P0455 Troublecode Causes

You can trigger the P0455 code in Dodge Dakota by a variety of things. The most frequent problems that can trigger the code are:

 

  • Evap Hose– The hose that carries the fuel vapor from the fuel tank to the intake manifold can begin to leak. The P0455 error code will be generated. You should look for a hole or a tear in the code. This is the leading cause of code.
  • Vapor Canister Purge Valve– One of the most common causes of the P0455 code is the vapor canister purge valve. It’s really easy to replace. You will need to locate and take out a few clips.
  • A Faulty Canister of Charcoal– The charcoal canister is often the cause of P0455.
  • 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 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 P0455 to ensure you don't waste any money.
  • 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.

 

Dodge Dakota Diagnosis - P0455

P0455 Dodge Dakota

To diagnose the problem with your Dodge Dakota's P0455, a mechanic can use a variety of tools. The most commonly used methods to diagnose this code are:

  • A mechanic will often check for additional codes. It is easier to diagnose problems if there are more codes. 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.
  • The mechanic will normally determine what trouble codes are associated with P0455. Take a look at the EVAP system. These include the line and purge valve.
  • 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.
  • Monitor and check the pressure in your fuel tank.
  • The mechanic will then perform the following tests after completing the above-mentioned checks:
  • A smoke test, and they’ll use a scan tool to confirm that the EVAP solenoids and valves are operating properly.

Here’s a pretty good video on diagnosing these leaks from Scotty Kilmer, if you are interested:

While the trouble code may state that there is a “large leak” in the EVAP system of your Dodge Dakota, the actual leak will most likely still look rather small. The “large” really is referring to how much pressure is being lost.

 

Most common P0455 fixes

P0455 Fix Dodge Dakota

These are some of the more common Dakota P0455 fix:

  • Replacing the gas cap
  • Replacing EVAP lines
  • Replace charcoal canister
  • Change the fuel tank

You should start with the gas caps and move on to the fuel tanks. This is because the gas caps are the easiest to replace and the least costly.

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

It's a good idea to try and figure out why your Dodge Dakota is throwing the code P0455. We trust this helped. You can add any additional information by leaving a comment.

 

Do you consider P0455 to be a serious concern?

While P0455 is not going to cause the Dakota’s engine to stop running, it should not be treated lightly. Fuel leaks could be a problem. Check your tank regularly to make sure there is no fuel leaking. It is best to have it checked and/or dealt with immediately.

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