Solving P0446 on Your 2024 Acura Integra
A P0446 code on your 2024 Acura Integra signals an EVAP vent control circuit malfunction. The Integra uses a 1.5L turbocharged VTEC engine (or the 2.0L turbo in the Type S) on a Civic-shared platform. Acura's EVAP system features a canister vent shut valve, built on Honda's proven architecture.
Under full warranty, this is a no-cost dealer repair.
Symptoms Present
- Check engine light with P0446
- Fuel fill difficulty
- EVAP readiness monitor incomplete
Top Suspects
- Canister Vent Shut Valve Defect (High Likelihood): Manufacturing variation. Warranty-covered.
- ECU Software Calibration (High Likelihood): EVAP monitoring update. Warranty-covered reflash.
- Bypass Solenoid Valve Issue (Medium Likelihood): Defective purge valve. Warranty-covered.
- Vent Valve Wiring or Connector (Medium Likelihood): Factory assembly issue. Warranty-covered.
- Gas Cap Seal (Low Likelihood): Factory fit. Warranty-covered.
What to Do
Take your Integra to an Acura dealer. HDS diagnostics and all EVAP repairs are free under warranty.
Full Warranty Coverage
Your 2024 Integra is covered by Acura's 4-year/50,000-mile basic and 6-year/70,000-mile powertrain warranty. All EVAP repairs are free.
Safe to Drive?
Yes. P0446 doesn't affect your Integra's turbo VTEC performance, transmission, or any driving features. Type S capability is fully maintained.