P0456 on Your 2022 Volvo XC60
A P0456 code on your 2022 Volvo XC60 means the ECM has detected a very small leak—about 0.020 inches—in the EVAP system. Built on Volvo's SPA platform, the XC60 uses a 2.0L four-cylinder in B5, B6, or T8 PHEV configurations, all sharing the same gasoline EVAP system.
Common Causes
- Gas cap seal wear (32%) — Three years degrades the seal. Check first.
- Purge valve seepage (23%) — Volvo's purge solenoid can develop slight internal leaks.
- EVAP line deterioration (18%) — Heat from the turbo/supercharged engine affects nearby vapor lines.
- Canister shut-off valve issue (14%) — Vent control wear.
- Charcoal canister damage (8%) — Road debris impacts.
- Fuel tank seal (5%) — Slow gasket degradation.
Diagnostic Steps
- Gas cap test — New OEM cap ($15–$35), clear code, monitor.
- Smoke test — Professional testing pinpoints the leak.
- VIDA diagnostics — Volvo's dealer tool for EVAP data.
- Component testing — Individual valve testing.
Repair Costs
- Gas cap: $15–$35 (DIY)
- Purge valve: $170–$370
- Canister shut-off valve: $180–$380
- EVAP hose repair: $110–$260
- Charcoal canister: $290–$560
Warranty
Your 2022 XC60 is covered under Volvo's 4-year/50,000-mile warranty through 2026 and the federal emissions warranty for 8 years/80,000 miles through 2030.