DTC P0442: EVAP System Malfunction, Small Leak Detected: Condition

DTC is set when PCM detects excessive difference in fuel tank pressures measured immediately after purge control is stopped with Canister Drain Cut Valve (CDCV) closed and preset period of time has elapsed. Possible causes are:

• Purge solenoid valve malfunction.
• CDCV malfunction.
• TPCV malfunction.
• Vent cut valve malfunction.
• Charcoal canister malfunction.
• Catch tank malfunction.
• Rollover valve malfunction.
• Cracked fuel tank.
• Loose components.
• Clogs or leakage in system hoses.