Scantool Diagnostics

P0455 Evaporative Emission System-Leak detected (Large leak)

Scantool Diagnostics

Monitor DTC Status

NOTE:
If any codes relating to Fuel tank pressure sensor, Canister closing valve or PCSV circuits are present, do ALL REPAIRS associated with those codes before proceeding with this troubleshooting tree.

1. Start engine to normal operating temperature

NOTE:
Evaporative Emissions Systems (EVAP) Leak Tests can be run by the GDS. The tests are automated and provide either a pass-fail result or directions to check for DTCs.

2. Install GDS and clear DTC
3. Perform "EVAP. LEAKAGE TEST" mode referring to enable conditions as below

NOTE:
EVAP. Leakage Test enable conditions
- Following conditions must be fulfilled to start the test.
1) Engine warm up at Idle Status
2) No relevant DTC
3) Fuel level is below 80%

4. Is DTC P0455 set again?