Repair cost
P0455 Repair Cost: Typical Price Range and What Affects It
P0455 repair cost is often low when the issue is a gas cap, but it can rise when the large EVAP leak needs smoke testing, purge or vent valve work, hose repair, or canister replacement.
Repair range
$25-$700
Parts range
$20-$546
Labor time
0.7-2.5 hours
Cost Summary
P0455 repair cost is often low when the issue is a gas cap, but it can rise when the large EVAP leak needs smoke testing, purge or vent valve work, hose repair, or canister replacement.
Common Repair Scenarios
- Gas cap inspection and replacement
- EVAP smoke test to locate a large leak
- Purge valve replacement
- Vent valve or filter repair
- Charcoal canister or damaged line replacement
What Changes The Cost
- Whether the cap seal is the only fault
- Smoke test diagnostic fee
- Valve access near the tank or engine
- Canister damage from overfilling
- Rusty or brittle EVAP lines
Regional And Quote Guidance
EVAP repairs vary by diagnostic fee and underbody access. Rust, road debris, and fuel-tank-area labor can move the quote upward.
Get another quote if an expensive canister is recommended before a smoke test or before the gas cap and valves are verified.
Related Diagnostic Page
FAQ
Why is P0455 repair cost such a wide range?
The same code can come from a low-cost fault or an expensive component, so diagnosis changes the final price.
Should I approve the most expensive P0455 repair right away?
Not usually. Ask what tests confirmed the part and whether related codes or simple causes were ruled out.
Does region affect the estimate?
Yes. Labor rates, diagnostic fees, parts availability, and local emissions requirements can change the price.