P0456

Test 1:

Tests 2 - 5:

Test 6:

SYMPTOM
P0456 EVAP LEAK MONITOR SMALL (0.020) LEAK DETECTED

TEST NOTE
This symptom is diagnosed using the test P0442 EVAP LEAK MONITOR MEDIUM (0.040) LEAK DETECTED.

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

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

POSSIBLE CAUSES
- DTC not equal to freeze frame
- DTC EVAP purge system small leak