Loaded Canister Test

LOADED CANISTER TEST
The Loaded Canister Test uses oxygen sensor data or fuel trim information to determine if the engine is purging large amounts of fuel vapor from the EVAP canister If large amounts of fuel vapors are being purged, this indicates the canister is at least 60% full and that the system is working properly. When this is the case, the EVAP diagnostics P0440, P0442, P0446 and P1441 pass for that trip and no further testing is done. If this test does not indicate sufficient canister loading, the Weak Vacuum Test is run.

NOTE: This test can only report a PASS.