DTC P0455 EVAP System (CPC) Leak Detected (Large Leak): Notes

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

Fuel odor
There is a hole of more than 1.0 mm (0.04 in) dia. in evaporation system or fuel tank.
Fuel filler cap loose or lost

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Clear Memory Mode>OPERATION . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Inspection Mode>PROCEDURE .

CHECK FUEL FILLER CAP .
1. Turn the ignition switch to OFF.
2. Check the fuel filler cap.
NOTE: The DTC is stored in memory if fuel filler cap is or was loose or if the cap chain has caught while tightening.

Is the fuel filler cap tightened securely?
- Yes: Go to 2 .
- No: Tighten fuel filler cap securely.
CHECK FUEL FILLER CAP .
Is the fuel filler cap genuine?
- Yes: Go to 3 .
- No: Replace with a genuine fuel filler cap.
CHECK FUEL FILLER PIPE GASKET .
Is there any damage to the seal between fuel filler cap and fuel filler pipe?
- Yes: Repair or replace the fuel filler cap and fuel filler pipe. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Filler Pipe .
- No: Go to 4 .
CHECK PURGE CONTROL SOLENOID VALVE .
Check air-tightness of the purge control solenoid valve. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO)>Purge Control Solenoid Valve>INSPECTION .

Is the purge control solenoid valve OK?
- Yes: Go to 5 .
- No: Replace the purge control solenoid valve. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO)>Purge Control Solenoid Valve .
CHECK EVAPORATIVE EMISSION CONTROL SYSTEM LINE .
Are there holes on the evaporation line?
- Yes: Repair or replace the evaporation line. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Delivery and Evaporation Lines .
- No: Go to 6 .
CHECK CANISTER .
Are there holes on the canister?
- Yes: Replace the canister. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO)>Canister .
- No: Go to 7 .
CHECK LEAK CHECK VALVE ASSEMBLY .
Are there damage or holes on the leak check valve assembly?
- Yes: Replace the leak check valve assembly. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DO)>Leak Check Valve Assembly .
- No: Go to 8 .
CHECK FUEL TANK .
Remove the fuel tank. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Tank .

Are there damage or holes on the fuel tank?
- Yes: Repair or replace the fuel tank. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Fuel Tank .
- No: Go to 9 .
CHECK ANY OTHER MECHANICAL TROUBLE IN EVAPORATIVE EMISSION CONTROL SYSTEM .
Are there holes, cracks, clogging, or disconnection, misconnection of hoses or pipes in evaporative emission control system?
- Yes: Repair or replace the hoses or pipes.
- No: Repair the poor contact of ECM connector.