2022 Volkswagen Tiguan P0456: Very Small EVAP Leak Guide

Tracking P0456 on Your 2022 Tiguan

Your 2022 Tiguan (2nd generation, refreshed) has triggered P0456—a very small EVAP leak. The 2.0L EA888 TSI turbo uses VW's leak detection pump. VW 4yr/50k warranty runs through 2026.

Evidence

• Check engine light on
• P0456 stored
• No performance issues
• Gas cap may need reseating

Suspects

1. Gas Cap Seal (High Likelihood): Loose or worn. $0 warranty or $10–$20.
2. Leak Detection Pump (High Likelihood): VW LDP failure. $0 warranty or $210–$400.
3. N80 Purge Valve (Medium Likelihood): Common VW component. $0 warranty or $140–$290.
4. EVAP Hose (Medium Likelihood): Connection. $0 warranty or $120–$250.
5. Activated Carbon Canister (Low Likelihood): Fuel overfilling. $260–$440.

Diagnostic Steps

1. Reseat gas cap
2. Check warranty—VW 4yr/50k through 2026
3. VW dealer—ODIS diagnostics
4. VCDS for enthusiast-level data

Costs

• Under warranty: $0
• Gas cap: $10–$20
• LDP: $210–$400
• N80 valve: $140–$290

Can I Drive?

Yes. P0456 has zero impact on the TSI turbo, 4MOTION, or performance.

Warranty

VW 4yr/50k through 2026. Federal emissions 8yr/80k through 2030.

Frequently Asked Questions