Volvo P0455 Error Code: How to Fix It

Medium 1-2 hours Low Severity Verified June 2026
Error Code
P0455
Brand
Volvo
Product Type
automotive
Severity
Low
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
The P0455 error code in your Volvo indicates a large leak in the Evaporative Emission Control (EVAP) system, which prevents fuel vapors from escaping into the atmosphere. While this won't affect your car's performance significantly, it can cause failed emissions tests and increased fuel consumption.
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Tools You'll Need

How to Fix Error Code P0455

  1. Safety First and Initial Check

    Never smoke or use open flames when working around the fuel system
  2. Inspect the Gas Cap and Seal

  3. Connect OBD2 Scanner

  4. Visual Inspection of EVAP Lines

  5. Perform Smoke Test (If Equipment Available)

    Only use proper EVAP smoke testing equipment - never use cigarettes or other combustible materials
  6. Test Drive and Monitor

Parts You May Need

EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
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Charcoal canister
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
Check Price on Amazon
Charcoal canister
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
Check Price on Amazon
Charcoal canister
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
Check Price on Amazon
Charcoal canister
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
Check Price on Amazon
Charcoal canister
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
Check Price on Amazon
Charcoal canister
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
Check Price on Amazon
Charcoal canister
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Purge control solenoid valve
Check Price on Amazon
Charcoal canister
Check Price on Amazon
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When to Call a Professional

Call a professional mechanic if the smoke test reveals leaks in hard-to-reach areas like the fuel tank, if multiple components need replacement, or if you're not comfortable working with fuel system components. Professional diagnosis is recommended when the leak source cannot be visually identified.

Frequently Asked Questions

Can I drive my Volvo with P0455 error code?
Yes, you can continue driving safely with P0455. This code indicates an emissions system issue that won't affect engine performance or safety, but it should be repaired to pass emissions tests and prevent environmental impact.
How much does it cost to fix P0455 on a Volvo?
Repair costs vary widely depending on the cause. A loose gas cap costs nothing to fix, while a faulty charcoal canister can cost $300-600 including labor. Most common fixes like replacing vacuum hoses range from $50-200.
Will P0455 cause my Volvo to fail emissions testing?
Yes, P0455 will typically cause your vehicle to fail emissions testing. The error must be resolved and the code cleared before your Volvo will pass inspection in most areas.
What causes P0455 error code in Volvo vehicles?
Common causes include loose or damaged gas cap, cracked EVAP hoses, faulty purge valve, damaged charcoal canister, or leaks in the fuel filler neck. The gas cap is the most frequent culprit.
How long does it take for P0455 to reset after repair?
After clearing the code, it typically takes 2-3 drive cycles or 50-100 miles of normal driving for the EVAP system to complete its self-test and confirm the repair was successful.