P0455

Test 1:

Tests 2 - 3:

Tests 4 - 5:

SYMPTOM
P0455 - EVAP LEAK MONITOR LARGE LEAK DETECTED

TEST NOTE
This symptom is diagnosed using the test P0442 - EVAP LEAK MONITOR SMALL LEAK DETECTED

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

SET CONDITION
If there is a leak larger than 0.040" and smaller than 0.080" in the evaporative system.

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