DTC P0441-B: EVAP Purge Flow Monitor Failure
- During this step, DO NOT use more than 5 psi (0.35 kg/cm2 ). Turn ignition off. Attempt to blow air through vacuum line that goes to canister. If canister and vacuum line allow air to pass, proportional purge solenoid and hoses are okay, go to next step. If canister and vacuum line do not allow air to pass, go to step 3.
- No trouble was found during this test. The following components can be inspected as possible causes for trouble code: damaged rubber hoses from proportional purge solenoid to throttle body, plastic connector to proportional purge solenoid cracked, proportional purge solenoid malfunction, hose plugged from proportional purge solenoid to canister, hose plugged from throttle body to solenoid, faulty connections or vacuum hose from fuel tank to canister. Test is complete.
- Disconnect vacuum hose from proportional purge solenoid to throttle body at proportional purge solenoid. Attempt to blow air through vacuum line that goes to canister. If air passes through vacuum line, go to next step. If air does not pass through vacuum line, repair or replace vacuum line. Perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES .
- Check for a plugged vent port on canister. If vent port is plugged, clean plugged vent port and retest. Perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES . If vent port is not plugged, replace EVAP canister. Perform TEST VER-5A: ROAD TEST FOR OBD-II TROUBLE CODES .