This code indicates that the vehicle's evaporative emission control system has detected a large leak. The evaporative emission control system is responsible for preventing fuel vapors from escaping into the atmosphere. A leak in this system can cause fuel vapors to enter the vehicle's cabin or be released into the environment.
Symptoms of P0455
- Illuminated Check Engine Light
- Strong odor of fuel inside the vehicle
- Poor fuel economy
- Engine stalling or hesitation
Causes of P0455
- Loose or missing gas cap
- Damaged fuel tank
- Damaged fuel lines
- Faulty purge valve
- Faulty vapor canister
- Faulty pressure sensor
How to Fix P0455
The first step in fixing P0455 is to check the gas cap. Make sure it is tight and that the seal is not damaged. If the gas cap is loose or damaged, replace it.
If the gas cap is not the cause of the problem, you will need to have the vehicle diagnosed by a qualified technician. The technician will be able to determine the source of the leak and recommend the appropriate repairs.
Cost to Fix P0455
The cost to fix P0455 will vary depending on the cause of the leak. A simple repair, such as replacing the gas cap, can cost as little as $10. More complex repairs, such as replacing the fuel tank, can cost several hundred dollars.
