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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Controls - Self-Diagnostics - 3.9L & 5.9L) >> Diagnostic Tests >> DTC P0441: EVAP Purge Flow Monitor >> Testing

DTC P0441: EVAP Purge Flow Monitor: Testing

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition on, with engine off. With the DRBIII(R) scan tool, read the DTCs and record the related freeze frame data? If yes, go to next step. If no, see INTERMITTENT CONDITION  under SELF-DIAGNOSTIC SYSTEM.
  2. Visually inspect the EVAP canister. Look for any physical damage or any signs that fuel has entered the canister. Any signs of fuel may indicate a bad rollover valve. Were any problems found? If yes, repair or replace as necessary. If no, go to next step.
  3. Visually inspect the EVAP purge hose that goes from the purge solenoid to the canister. Look for any physical damage, such as a pinched, plugged, ripped or dry-rotted hose. Were any problems found? If yes, repair or replace hose as necessary. If no, go to next step.
  4. Visually inspect the EVAP purge hose that goes between the EVAP canister and the fuel tank. Look for any physical damage, such as a pinched, plugged, ripped or dry-rotted hose. Were any problems found? If yes, repair or replace hose as necessary. If no, go to next step.
  5. Turn the ignition off. Carefully inspect the EVAP purge solenoid vacuum supply hose for proper routing. Also, check for a pinched or plugged hose from the throttle body to the purge solenoid. Inspect the vacuum nipple at the throttle body for any damage or plugging. Make sure vacuum fitting at the purge solenoid is not over installed. Is the vacuum supply hose and throttle body vacuum nipple free from defects? If yes, go to next step. If no, repair the vacuum supply hose/tube as necessary.
    6. 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. Replace purge solenoid if contamination is found.
  6. Disconnect the vacuum hoses at the EVAP purge solenoid. Using a hand vacuum pump, apply 10 in. Hg to the EVAP purge solenoid vacuum source port (component side). Does the EVAP purge solenoid hold vacuum? If yes, go to next step. If no, replace the EVAP purge solenoid and the EVAP canister, and clean out EVAP lines as necessary.
  7. Using a hand vacuum pump, apply 10 in. Hg to the EVAP purge solenoid vacuum source port (component side). Turn ignition on, with engine off. With the DRBIII(R) scan tool, actuate the EVAP purge solenoid and observe the vacuum gauge. Does the vacuum drop when the solenoid is actuated? If yes, see INTERMITTENT CONDITION  under SELF-DIAGNOSTIC SYSTEM. If no, replace the EVAP purge solenoid.
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