Code Definition
- DTC P0441: EVAP Emission Control System Purge Solenoid Valve Stuck Open
- DTC P0443: EVAP Emission Control System Purge Solenoid Valve Circuit Malfunction
Note. Before performing any diagnostic test, refer toWARNINGS, CAUTIONS and NOTES in DIAGNOSTIC TESTS .
Note. Testing individual components does not isolate shorts or opens. Perform all voltage tests using a Digital Volt-Ohmmeter Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.
Diagnostic Aid
Malfunction code is set when solenoid coil surge voltage (system voltage +2) is not detected when EVAP emission vent solenoid is turned on/off.
Check for following possible problems
- Purge control solenoid valve stuck open.
- Open or short between ECM relay and purge control solenoid valve
- Open or short between purge control solenoid valve and Engine/Transaxle Control Module (E/TCM) or Engine Control Module (ECM).
- Faulty purge control solenoid valve