Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Ford Freestar BaseFACTORY OEM SERVICE PROCEDURE
Fuel System DTCS
PCM DIAGNOSTICS TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| P0442 | Small Leak Detected in EVAP System | PCM | Go To PINPOINT TEST A: DTC P0442 SMALL LEAK IN EVAP SYSTEM . |
| P0457 | Cap Off | PCM | Go To PINPOINT TEST A: DTC P0442 SMALL LEAK IN EVAP SYSTEM |
| P0456 | Very Small Leak Detected in EVAP System | PCM | Go To PINPOINT TEST A: DTC P0442 SMALL LEAK IN EVAP SYSTEM . |
| P0455 | Major Leak or no Flow Detected | PCM | Go To PINPOINT TEST B: DTC P0455 MAJOR LEAK OR NO FLOW DETECTED OR DTC P1443 VERY SMALL OR NO PURGE FLOW DETECTED IN SYSTEM . |
| P1443 | Very Small or no Purge Flow Detected | PCM | Go To PINPOINT TEST B: DTC P0455 MAJOR LEAK OR NO FLOW DETECTED OR DTC P1443 VERY SMALL OR NO PURGE FLOW DETECTED IN SYSTEM . |
| P1450 | Excessive Vacuum Detected in the Fuel Tank | PCM | Go To PINPOINT TEST C: DTC P1450 EXCESSIVE VACUUM DETECTED IN THE FUEL TANK . |
| - | Any Other PCM DTC | PCM | Refer to INTRODUCTION - CNG, FLEX-FUEL & GASOLINE . |
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.
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 QuoteNo obligation. See pricing before you book.