Evaporative Emission Control System Leak Detected
P1442 is an OBD-II trouble code that indicates evaporative emission control system leak detected. This page explains what the code means, what issues may trigger it, common symptoms and where to look next.
P1442 code meaning is one of the most common OBD-II searches when a warning light appears on the dashboard.
Drivers searching for P1442 usually want to know what the code means, whether the car is safe to drive and what part may need testing first.
Likely causes
- • Loose or faulty fuel cap
- • EVAP hose leak
- • Purge or vent valve fault
- • Wiring or connector issue
- • Component failure in the affected system
- • Intermittent signal or control fault
Symptoms
- • Check engine light illuminated
- • Fuel smell
- • Emissions test failure
Severity
Low to Medium
Can you keep driving?
The vehicle often still drives normally, but the issue should still be repaired because it can affect emissions and trigger repeated warning lights.
Common fix areas
- • Inspect fuel cap seal
- • Smoke test the EVAP system
- • Check purge and vent valves
- • Scan all fault codes and freeze-frame data
- • Inspect wiring, connectors and grounds
- • Confirm repair with a retest after clearing codes
Manufacturer notes
FAQs
What does P1442 mean?
P1442 means evaporative emission control system leak detected.
What can cause P1442?
Common causes include component failure, wiring faults, incorrect sensor readings, leaks, pressure issues or related upstream faults in the same system.
Can I keep driving with P1442?
That depends on how the car is behaving. If there is rough running, overheating, loss of power or stalling, it should be diagnosed quickly.
Does P1442 always mean I need a new part?
No. A fault code points you to a system or condition, but proper diagnosis is still needed before replacing parts.