P1442
FordEvaporative Emission Control System Leak Detected
The EVAP system captures fuel vapors and routes them to the engine to be burned instead of releasing them into the air. This code means the system detected a leak condition. It does not identify the leak location or prove that any one part needs replacement. The check-engine light may be the only noticeable effect.
⚠️ Before You Begin (Safety First)
A small EVAP leak usually does not make the vehicle unsafe to drive. If you smell strong or persistent fuel vapors, see liquid fuel, or feel unwell from fumes, stop driving, move away from ignition sources, and have the vehicle inspected. Fuel vapors are flammable.
Common Symptoms
- The check-engine light may be on because the EVAP monitor detected a leak condition.
- There may be no noticeable change in how the vehicle starts or drives; many EVAP leaks do not affect normal engine operation.
- Fuel-vapor odor may occur if vapors escape through a leak, though odor is not guaranteed.
- The code may return after being cleared if the leak condition remains.
Common Causes
- A fuel cap that is loose, damaged, missing, or not sealing properly, if the vehicle uses a removable cap.
- A cracked, disconnected, or damaged EVAP hose or vapor line.
- A leak at a hose connection, seal, or other part of the vapor containment system.
- An EVAP valve or other system component that does not seal as intended.
- A leak elsewhere in the EVAP system; testing is needed to locate the cause.
Diagnostic Steps
- Park outdoors, switch the engine off, and keep flames, smoking materials, and other ignition sources away from the vehicle.
- Check whether the fuel cap is present and fully seated, if your vehicle has a removable cap. Inspect its seal for visible damage; do not force or modify a capless filler.
- Look for visibly disconnected or damaged EVAP hoses around areas that are safely accessible. Do not reach near hot or moving parts.
- Note any fuel-vapor odor or visible fuel. If the odor is strong or persistent, stop driving and arrange an inspection.
- Record the code before clearing it. If it returns, have the EVAP system tested using procedures appropriate to the vehicle's model, year, and engine.
When to Call a Professional
Record the code and any related scan data before clearing it. Check the fuel cap and accessible EVAP hoses, then use model-specific test procedures to check system sealing and valve operation. A smoke test can help locate leaks, but the code alone is not a reason to replace a cap, valve, or other part.
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Commonly Asked Questions
Does P1442 tell me which part to replace?
No. It reports an EVAP leak condition, not the location or failed part. The system needs to be checked for leaks and sealing problems before parts are replaced.
Can I keep driving with P1442?
Usually, a leak code alone does not affect drivability. Do not continue driving if you find liquid fuel or smell strong, persistent fuel vapors; move away from ignition sources and arrange an inspection.
Could a fuel cap cause this code?
A cap that does not seal can be a possible cause on vehicles with a removable fuel cap. Some vehicles are capless, and the code can also result from leaks elsewhere in the EVAP system.
Why might the code return after I clear it?
Clearing the code does not fix a leak. If the EVAP system still has a sealing problem, the code may return when the vehicle's monitor checks the system again.
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