P2422

Component Location





General Description

The evaporative emission control system prevents hydrocarbon (HC) vapors from the fuel tank from escaping into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The ECM controls the Purge Control Solenoid Valve (PCSV) to purge any collected vapors from the canister back to the engine for combustion. This valve is actuated by the purge control signal from the ECM and controls fuel vapor flow from the canister to the intake manifold.

DTC Description

Checking output signals from fuel tank pressure sensor at purging, if fuel tank's vacuum is higher than prescribed threshold, ECM sets P2422.

DTC Detecting Condition





Monitor Scantool Data

Check DTC Status
1. Connect scantool to Data Link Connector(DLC).
2. IG "ON".
3. Select "DTC" button, and then Press "DTC Status" to check DTC's information from the DTCs menu.
4. Read "DTC Status" parameter.




5. Is parameter displayed "Present fault"?�





EVAP. Leakage Test
1. Cool the vehicle down for about two hours to prevent misdiagnosis.
2. Install scan tool and IG "ON" and then clear DTC.
3. Select and press "EVAP.LEAKAGE TEST" mode in the scan tool.
4. Check if the vehicle is under test conditions as below [Fig 1].
5. If OK, Start engine and restart EVAP.Leakage Test again[Fig 2].








6. Is the same DTC set after the EVAP.leakage test with scan tool ?






Component Inspection

Check Canister air filter and CCV
1. Visually inspect air filter is clogged.
2. Visually inspect duck between air filter and CCV is clogged.
3. Check that Canister is deformed or clogged by foreign materials.
4. Has a problem been found ?






Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.
1. Connect scantool and select "DTC" button.
2. Press "DTC Status" button and confirm that "DTC Readiness Flag" indicates "Completed". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
3. Read "DTC Status" parameter.
4. Is parameter displayed "History(Not Present) fault"?