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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 42 (Engine Control System Diagnosis - 2.0L (2 Of 3) (Except HEV)) >> DTC P0442: Evaporative Emission System-Leak Detected (Small Leak) >> System Inspection >> Vapor Line Diagram & Test Condition

Vapor Line Diagram & Test Condition

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect Hose from PCSV goes to fuel tank
  2. Block the hole at the end of disconnected hose with a appropriate plug
  3. Remove Canister Service Hall Cover underneath rear seat or trunk luggage floor
  4. After disconnecting Vapor line coupler, install a Vacuum pump & gauge on the Hose to PCSV
  5. Check vacuum leakage through the Vapor Line with Hand Vacuum Pump operation

    Specification:  No Leakage

    Fig 1: Checking Vacuum Leakage Through Vapor Line With Hand Vacuum Pump
    G11991779Courtesy of HYUNDAI MOTOR AMERICA
  6. Does a leak exist?

    YES 

    NO 

    • Go to 'CCV & Canister Line Diagram & Test Condition procedure below.