P0456 on Your 2024 Tiguan: Quick Case
Your 2024 Tiguan (3rd generation—all-new) has flagged P0456—a very small EVAP leak. The 2.0L EA888 TSI turbo uses VW's leak detection pump (LDP). First year of the redesign—fully covered under VW's 4yr/50k warranty through 2028.
Clues
- Check engine light on
- P0456 stored
- No drivability issues
- Gas cap may not be fully tightened
Suspects
- Gas Cap Not Seated (High Likelihood): Most common trigger. $0.
- Leak Detection Pump (Medium Likelihood): First-year component. $0 warranty.
- N80 Purge Valve (Medium Likelihood): Manufacturing variance. $0 warranty.
- Software Calibration (Low Likelihood): New platform LDP sensitivity. $0 warranty update.
What to Do
- Reseat gas cap firmly
- VW dealer appointment—covered through 2028
- Free warranty repair—ask about first-year TSBs
Cost
- Under warranty: $0
- 4yr/50k through 2028
- Federal emissions through 2032
Can I Drive?
Yes. P0456 has zero impact on the TSI turbo, 4MOTION AWD, or any system.
Warranty
VW 4yr/50k through 2028. Federal emissions 8yr/80k through 2032. First-year redesign—dealer may have calibration updates.