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Home >> Chrysler >> 2002 >> Voyager Base, 2.4 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> DTC P0441: EVAP Purge Flow Monitor >> Testing

DTC P0441: EVAP Purge Flow Monitor: Testing

  1. Turn ignition on. Using scan tool, check for DTCs. If Good Trip counter is displayed for DTC P0441 and displayed count is "0", go to next step. If Good Trip counter is not displayed for DTC P0441 or displayed count is not "0", go to step  8.
    2. NOTE: After disconnecting the EVAP purge solenoid vacuum connections, inspect the lines and solenoid for any signs of contamination from the EVAP canister. This may indicate a faulty rollover valve. Repair or replace as necessary.
  2. Turn ignition off. Disconnect EVAP purge solenoid hoses. EVAP purge solenoid is located on lower right side of engine compartment, near radiator. Using a vacuum pump, apply 10 in. Hg to EVAP purge solenoid vacuum source port. If vacuum holds, go to next step. If vacuum does not hold, replace EVAP canister purge solenoid valve.
  3. Ensure 10 in. Hg of vacuum is still applied to EVAP purge solenoid vacuum source port. Turn ignition on. Using scan tool, actuate EVAP purge solenoid and observe vacuum gauge. If vacuum reading decreases, go to next step. If vacuum reading stays unchanged, replace EVAP purge solenoid.
  4. Turn ignition off. Inspect EVAP purge solenoid vacuum supply hose for proper routing. Check for pinched or plugged vacuum supply hose between throttle body and EVAP purge solenoid. Replace vacuum hose as necessary. If vacuum hose is okay, check for plugged throttle body vacuum nipple. Repair vacuum nipple as necessary. If vacuum nipple is okay, go to next step.
  5. Inspect EVAP purge hose from EVAP purge solenoid to EVAP canister. All models are equipped with 2 EVAP canisters. EVAP canisters are located on frame rail, directly below the driver's seat. Check for plugged, pinched, ripped or dry-rotted hose. Repair or replace EVAP purge hose as necessary. If EVAP purge hose is okay, go to next step.
  6. Inspect EVAP purge hose between EVAP canister and fuel tank. Check for plugged, pinched, ripped or dry-rotted hose. Repair or replace EVAP purge hose as necessary. If EVAP purge hose is okay, go to next step.
  7. Visually inspect EVAP canisters for damage or signs that fuel has entered canisters. Any sign of fuel in EVAP canisters may indicate a defective rollover valve. Rollover valve is located on top of fuel tank and is not serviceable. If rollover valve is defective, fuel tank must be replaced. Replace EVAP canisters and/or fuel tank as necessary. If EVAP canisters are okay, no problem is indicated at this time. Test is complete.
  8. At this time, conditions for DTC to set do not exist or fault is an intermittent problem. Using scan tool, review Freeze Frame data. Attempt to duplicate condition that caused DTC to set. Visually inspect related connectors and wiring harness for damage. Check for any related technical service bulletins that may apply. Turn ignition on. Using scan tool, actuate EVAP purge solenoid. Wiggle EVAP purge solenoid wiring harness and listen for EVAP purge solenoid to quit actuating. Using scan tool, read DTCs. If Good Trip counter is displayed and displayed count changes to "0", or EVAP purge solenoid quits actuating, repair wiring where wiggling caused EVAP purge solenoid to quit actuating. If EVAP purge solenoid does not stop actuating and Good Trip counter is not displayed or displayed count does not change to "0", no problem is indicated at this time. Test is complete.
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