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Home >> Chrysler >> 2002 >> Neon LE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0441: EVAP Purge Flow Monitor >> Testing
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DTC P0441: EVAP Purge Flow Monitor: Testing

  1. Turn ignition the on. With the DRBIII(R), read DTCs. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, 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. Replace/repair as necessary.
  2. Turn the ignition off. Disconnect the vacuum hoses at the EVAP purge solenoid. Using a hand vacuum pump, apply 10 in. Hg of vacuum to the EVAP purge solenoid vacuum source port on the component side. Does the EVAP purge solenoid hold vacuum? If yes, go to next step. If no, replace the EVAP purge solenoid.
  3. Using a hand vacuum pump, apply 10 in. Hg of vacuum to the EVAP purge solenoid vacuum source port on the component side. Turn the ignition on. Observe the vacuum gauge. Turn the ignition on. With the DRBIII(R), actuate the EVAP purge solenoid. Does the vacuum drop when the solenoid is actuated? If yes, go to next step. If no, replace EVAP purge solenoid.
  4. Turn the ignition off. Carefully inspect the EVAP purge solenoid vacuum supply hose for proper routing. Check for a pinched or plugged hose between the throttle body and the purge solenoid. Inspect the vacuum port at the throttle body for any damage or plugging. Were any problems found? If yes, repair the vacuum supply hose/tube as necessary. If no, go to next step.
  5. Visually inspect the EVAP purge hose between the EVAP purge solenoid and the EVAP 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.
  6. Visually inspect the EVAP purge hose from between the EVAP canister and the fuel tank. Check 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.
  7. Visually inspect EVAP canister for physical damage or evidence of fuel entering EVAP canister. If fuel has entered EVAP canister, it may indicate a defective rollover valve. Were any problems found. If yes, repair or replace as necessary. If no, test is complete.
    8. WARNING: When the engine is operating, DO NOT stand in a direct line with the fan. DO NOT put your hands near the pulleys, belts or fan. DO NOT wear loose clothing.
  8. Conditions that set DTC are not present at this time. The following list may help in identifying the intermittent condition:
    • With the engine running at normal operating temperature, monitor the DRBIII(R) parameters related to the DTC while wiggling the wiring harness. Look for parameter values to change and/or a DTC to set.
    • Review the DRBIII(R) Freeze Frame information to identify under what conditions the DTC set.
    • Refer to any Technical Service Bulletin (TSB) that may apply.
    • Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
    • Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

      Were any of the above conditions present? If yes, repair as necessary. If no, test is complete.

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