What Is Engine Code P0455

P0455 is a generic OBD-II code that indicates a leak in the evaporative emission control system (EVAP).

So What Is Engine Code P0455?

P0455 is a generic OBD-II code that indicates that the evaporative emission control system has a leak. This code is often caused by a faulty gas cap, but it can also be caused by a leak in the evaporative emission control canister, the purge valve, or the charcoal canister vent valve.

What is Engine Code P0455?

Engine code P0455 is a generic OBD-II code that indicates that the evaporative emissions control system (EVAP) has a leak. This means that there is a problem with the system that is designed to prevent fuel vapors from escaping from the fuel tank.

Symptoms

There are a few symptoms that you may experience if you have engine code P0455:

A check engine light on the dashboard
A smell of gasoline inside the vehicle
A decrease in fuel economy
Engine hesitation or stalling

Causes

There are a number of things that can cause engine code P0455, including:

A damaged or leaking fuel tank
A damaged or leaking fuel line
A damaged or leaking fuel cap
A faulty EVAP purge valve
A faulty EVAP canister
A faulty EVAP solenoid

Diagnosis

To diagnose engine code P0455, a mechanic will first use a scan tool to read the code and check for any other related codes. They will then visually inspect the fuel tank, fuel lines, and fuel cap for any damage or leaks. They may also perform a smoke test to check for leaks in the EVAP system.

Repair

Once the cause of engine code P0455 has been diagnosed, the mechanic will repair the problem. This may involve replacing the damaged or leaking fuel tank, fuel line, or fuel cap. They may also need to replace the EVAP purge valve, canister, or solenoid.

Prevention

There are a few things you can do to help prevent engine code P0455:

Keep the fuel tank full to help prevent vapors from escaping.
Inspect the fuel tank, fuel lines, and fuel cap regularly for any damage or leaks.
Replace the fuel cap if it is damaged or worn.
Have your vehicle serviced regularly.

Conclusion

Engine code P0455 is a common problem that can cause a number of symptoms. If you have this code, it is important to have it diagnosed and repaired as soon as possible to avoid further damage to your vehicle.

Also Read: What Is Engine Code P2096