HomeBrandsGenesisSedansp0442
G
p0442
Easy Fix
Genesis · Sedans
EVAP System Leak Detected (Small)
Quick Answer
Error code P0442 on your Genesis Sedans means: EVAP System Leak Detected (Small). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
DH-EVDGDG-SBDHDH-SPORTDJ
Likely Causes
  1. Loose or faulty fuel cap
  2. EVAP canister crack or leak
  3. Charcoal canister vent blockage
  4. Disconnected EVAP hose
  5. Faulty purge valve
How to Fix It
1
Verify fuel cap is tight and not damaged
2
Inspect all EVAP hoses for cracks or disconnections
3
Check charcoal canister for damage or leaks
4
Test purge valve operation
5
Perform EVAP smoke test to locate leak source
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Fuel cap
EVAP hoses
Purge valve
Charcoal canister gasket
Related Error Codes
P0171P0300P0420P0455P0507
Video Guides
Loading video guides…
Search more on YouTube →