OBD-II Code: P0442
LOW SEVERITY
Emissions
Evaporative Emission System Leak Detected (Small Leak)
Can I Drive?
Usually short-distance only; diagnose soon
Stop driving if you notice overheating, bad misfires, loss of power, fuel smell, or flashing warning lights.
Common Causes
Small EVAP leak: gas cap seal, small hose crack, purge valve
DIY Checks
Replace or tighten gas cap; inspect EVAP hoses
Mechanic Questions to Ask
Smoke machine test
Disclaimer: OBD code information is educational, not a professional diagnosis. The same code can have different causes depending on vehicle, mileage, maintenance history, and related codes. Always verify with a qualified mechanic.