2024 Nissan Titan P0456: Very Small EVAP Leak Fix

P0456 on Your 2024 Titan: Warranty Covers It

Your 2024 Titan has triggered P0456—a very small EVAP leak. The 5.6L Endurance V8 with 9-speed automatic uses Nissan's EVAP system with leak detection pump. Under full warranty, this is zero cost.

Symptoms

• Check engine light on
• P0456 stored
• No towing or performance issues
• V8 runs perfectly

Causes

1. Gas Cap Seal (High Likelihood): Loose cap or worksite dust. $0 warranty.
2. EVAP Leak Detection Pump (High Likelihood): Nissan-specific. $0 warranty.
3. Purge Volume Control Valve (Medium Likelihood): V8 heat. $0 warranty.
4. Canister Close Valve (Medium Likelihood): Road debris. $0 warranty.
5. Software Update (Low Likelihood): ECM calibration. $0 warranty.

What to Do

1. Reseat gas cap
2. Schedule warranty appointment
3. Dealer fixes for free

Cost

• Under warranty: $0
• Bumper-to-bumper through 2027
• Federal emissions through 2032

Can I Tow?

Yes. P0456 has zero impact on towing capacity, V8 performance, 4WD, or any truck feature.

Warranty

Nissan's 3yr/36k through 2027. 5yr/100k powertrain through 2029. Federal emissions 8yr/80k through 2032. Let the dealer handle it.

Frequently Asked Questions