P0442

Tests 414 - 416:

Tests 417 - 418:

SYMPTOM
P-0442 EVAP LEAK MONITOR SMALL LEAK DETECTED P-0455 EVAP LEAK MONITOR LARGE LEAK DETECTED

TEST NOTE: All symptoms listed above are diagnosed using the same tests. The title for the tests will be P-0442 EVAP LEAK MONITOR SMALL LEAK DETECTED.

WHEN MONITORED
Immediately after a cold start, with ambient temperature between 40 degrees F and 90 degrees F and coolant temperature within 10 degrees F of ambient temperature.

SET CONDITION
If there is a leak larger than .040" and smaller than .080" in the evaporative system.

POSSIBLE CAUSES
- EVAP system hoses or wiring damaged
- EVAP system component leaking
- Leak detection pump leaking
- EVAP leak monitor small or large does not reoccur