P2422

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 PCM 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 PCM 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, PCM sets P2422.

DTC Detecting Condition:

Schematic Diagram:

Monitor DTC Status
1. Check DTC Status
1. Connect scantool to Data Link Connector(DLC).
2. IG "ON".
3. Select "Diagnostic Trouble Codes(DTCs)" mode, and then Press F5(INFO) to check DTC's information from the DTCs menu
4. Read "DTC Status" parameter.






5. Is parameter displayed "Present fault"?

YES
a. Go to "Component Inspection" procedure.

NO
a. Go to "Evap.Leakage Test" as indicated below with scan tool.

2. 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[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 ?

YES
a. Go to "Component Inspection" procedure.

NO
a. Repeat "Evap.leakage test" with scan tool after cool the vehicle down sufficiently. If the same DTC isn't displayed after the test, it was intermittent fault. Go to "Verification of vehicle Repair" procedure.

Component Inspection
1. 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 ?

YES
a. Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.

NO
a. Carefully perform this troubleshooting procedures all over again from the beginning.

Verification of Vehicle Repair
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
2. Press F5(INFO) and confirm that "DTC Readiness Flag" indicates "Complete". 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"?

YES - System performing to specification at this time. Clear the DTC

NO - Go to the applicable troubleshooting procedure.