P0456 on Your 2024 Forester: A Quick Case
Your 2024 Forester (6th generation, SK2—new redesign) has flagged P0456—a very small EVAP leak. Brand new with the 2.5L Boxer and Symmetrical AWD, this is almost certainly a minor issue. Full Subaru warranty coverage through 2027.
Clues
- Check engine light on
- P0456 stored
- No drivability issues whatsoever
- Gas cap may not be fully tightened
Suspects
- Gas Cap Not Seated (High Likelihood): Most common on new vehicles. $0.
- Purge Control Solenoid Valve (Medium Likelihood): Manufacturing variance. $0 warranty.
- Software Calibration (Low Likelihood): First-year model detection sensitivity. $0 warranty update.
- EVAP Line Fitting (Low Likelihood): Factory connection. $0 warranty.
What to Do
- Reseat gas cap—tighten until it clicks
- If light persists after 2–3 drive cycles, dealer appointment
- Free warranty repair—ask about first-year TSBs
Cost
- Under warranty: $0
- 3yr/36k through 2027
- Federal emissions through 2032
Can I Drive?
Yes. P0456 has zero impact on the Boxer engine, AWD, EyeSight, or X-MODE.
Warranty
Subaru's 3yr/36k through 2027. 5yr/60k powertrain. Federal emissions 8yr/80k through 2032. First-year redesign—dealer may have updated calibrations.