Diagnosing P0455 on Your 2023 Honda HR-V
A P0455 on your 2023 Honda HR-V means the EVAP system detected a large leak. Your all-new 3rd-generation HR-V—now built on the Civic platform with a 2.0L engine—is under warranty for this repair. But check the gas cap first, because it's the most common cause.
Symptoms
- Check engine light with P0455
- Possible faint fuel odor
- Gas cap not clicking when tightened
- EVAP readiness monitor not completing
Top Causes
- Gas Cap Seal (Very High Likelihood): Loose or defective cap. Tighten until it clicks. Warranty-covered if defective.
- Canister Vent Shut Valve (Medium Likelihood): Honda's vent valve not sealing. Warranty-covered replacement.
- EVAP Hose Connection (Medium Likelihood): Factory assembly issue on the new platform. Warranty-covered.
- Bypass Solenoid Valve (Low Likelihood): Honda EVAP component. Warranty-covered.
- Fuel System Seal (Low Likelihood): Rare manufacturing defect. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If the light persists, take your HR-V to a Honda dealer for HDS diagnostics and smoke testing—all free under warranty.
Warranty Coverage
Your 2023 HR-V is covered by Honda's 3-year/36,000-mile basic warranty (through 2026), 5-year/60,000-mile powertrain warranty, and federal emissions warranty (8 years/80,000 miles). All EVAP repairs are free.
Safe to Drive?
Yes. P0455 doesn't affect the HR-V's 2.0L engine, CVT, or any driving systems.