P0456 on Your 2023 Bronco Sport: A Minor Case
Your 2023 Bronco Sport (C2 platform) has triggered P0456—a very small EVAP leak just 0.020 inches across. With the 1.5L EcoBoost or 2.0L EcoBoost (Badlands), this is almost always something simple. At 2–3 years old, warranty should handle it.
Symptoms
- Check engine light illuminated
- P0456 stored on scan
- No drivability issues
- AWD and trail modes unaffected
Top Causes
- Capless Filler Debris (High Likelihood): Trail dust or road grit in the Easy Fuel flap. $0–$80 (warranty likely covers).
- Purge Valve (High Likelihood): EcoBoost heat-related wear. $0–$200 (warranty may cover).
- EVAP Hose Connection (Medium Likelihood): Slightly loose from factory or trail vibration. $0–$250 (warranty covers).
- Vent Valve (Medium Likelihood): Contamination near fuel tank. $0–$280 (warranty may cover).
- Software Update (Low Likelihood): PCM calibration for EVAP detection sensitivity. $0 warranty flash.
Next Steps
- Check the capless filler for debris
- Schedule a Ford dealer warranty appointment
- Let the dealer diagnose with factory tools
- Ask about TSBs for the 2023 Bronco Sport
Costs
- Under warranty: $0
- Out of warranty — capless filler: $10–$80
- Out of warranty — purge valve: $80–$200
Can I Drive?
Yes. P0456 has zero effect on performance, AWD, GOAT modes, or any feature.
Warranty
Ford's 3yr/36k runs through 2026. Federal emissions (8yr/80k) covers EVAP through 2031. Take it to the dealer—this should cost you nothing.