2002 Chrysler Intrepid BaseFACTORY OEM SERVICE PROCEDURE

DTC P0440: General EVAP System Failure: Testing

    NOTE: If DTC P0443, P0452, P0453, P0498 or P0499 is also present, diagnose DTCs before continuing with this test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
  1. Turn ignition on, engine not running. With the DRBIII®, read DTCs and record related Freeze Frame data. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, go to step  11.
  2. Visually inspect the entire Evaporative Emission system. Check for disconnected hoses, holes or cracks, loose sealing points, damaged components, incorrect hose/tube routing, bad fuel cap gasket or fuel cap left off. Were any problems found? If yes, repair as necessary. If no, go to next step.
  3. 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. Were any problems found? If yes, repair as necessary. If no, go to next step.
  4. Using a hand vacuum pump, apply 10 in. Hg of vacuum to the EVAP Purge Solenoid vacuum source port (CAN port on component side). Turn ignition on, engine not running. With the DRBIII®, actuate the EVAP Purge Solenoid and observe the vacuum gauge. Does the vacuum drop when the solenoid is actuated? If yes, go to next step. If no, replace the EVAP Purge Solenoid.
  5. Reconnect all hoses and connectors. Start the engine. Allow the engine to idle. With the DRBIII®, perform the NVLD FORCED MONITOR TEST. Monitor the NVLD Switch state. As the test runs, the NVLD Switch should go from an open state to a closed stated, and then return to open when the test is complete. Did the NVLD Switch operate as described above? If yes, go to step  11. If no, go to next step.
    6. WARNING: Keep lit cigarettes, sparks, flames, and other ignition sources away from the test area to prevent the ignition of explosive gases. Keep the test area well ventilated.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.