P0442 Ford Bronco Sport
EVAP System Leak Detected (Small Leak) · Powertrain Code · Low · Repair: Easy
What is P0442?
A small leak has been detected in the EVAP system. Common causes include a loose or cracked gas cap, cracked EVAP hose, or faulty purge/vent valve.
When the Ford Bronco Sport triggers code P0442 (evap system leak detected (small leak)), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Ford Bronco Sport.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Ford Bronco Sport.
Common Causes on Ford Bronco Sport
- Gas cap not sealing due to worn O-ring
- EVAP purge valve leaking internally
- Cracked EVAP hose near fuel tank
- Fuel filler neck seal leak
- Charcoal canister vent valve stuck partially open
Symptoms
- Check engine light illuminated
- Faint fuel smell near vehicle
- Slightly reduced fuel economy
- Failed emissions test
- Occasional rough idle after refueling
Notes for Ford Bronco Sport
On Escape and Bronco Sport, the EVAP purge valve is easily accessible on the engine. Start with the gas cap before replacing valves.