📖 What Does P0455 Mean?
A large leak has been detected in the evaporative emission control system, allowing significant amounts of fuel vapor to escape.
Symptoms
Check engine light, strong fuel odor especially when refueling, failed emissions test, fuel smell inside vehicle.
Common Causes
Missing or severely damaged gas cap, major EVAP hose damage, faulty purge or vent valve, damaged fuel tank, loose fuel filler neck.
Possible Solutions
Replace gas cap, repair or replace damaged EVAP hoses, replace faulty valves, inspect fuel tank for damage, tighten fuel system connections.
Recommended Parts & Tools
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📦 Parts Needed
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Frequently Asked Questions about P0455
How serious is P0455?
This code has a medium severity level. This should be diagnosed and repaired soon to prevent further issues.
Can I drive with P0455?
You can typically drive short distances, but have it diagnosed as soon as possible.
How much does it cost to fix P0455?
Repair costs vary depending on the root cause, but typically range from $100-300 including parts and labor.
Related Diagnostic Codes
Other codes that may appear with P0455
Evaporative Emission Control System Malfunction
Emission Control System Code P0441
EVAP System Leak Detected Small Leak
Evaporative Emission Control System Purge Control Valve Circuit Malfunction
Evaporative Emission Control System Vent Control Circuit Malfunction
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system