DTC P1451: EVAP System Clog Detected (Pipe): Notes
DTC detecting condition:
Detected when two consecutive driving cycles with fault occur.
After servicing or replacing faulty parts, perform Clear Memory Mode Ref. to ENGINE (DIAGNOSTICS) (H6DO)>CLEAR MEMORY MODE>OPERATION ., and inspection mode Ref. to ENGINE (DIAGNOSTICS) (H6DO)>INSPECTION MODE>PROCEDURE .
- CHECK DRAIN TUBE BETWEEN CANISTER AND LEAK CHECK VALVE ASSEMBLY
.
Check the drain tube.
Is the drain tube between canister and leak check valve assembly clogged?
Yes: Replace the drain tube between the canister and leak check valve assembly. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H6DO)>CANISTER .
No: Go to 2 .
- CHECK HOSE AND TUBE BETWEEN CANISTER AND FUEL TANK
.
Check the hose or tube between the canister and fuel tank.
Are the hose and tube between the canister and fuel tank clogged?
Yes: Replace the hose or tube between the canister and fuel tank. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H6DO)>CANISTER . Ref. to FUEL INJECTION (FUEL SYSTEMS) (H6DO)>FUEL TANK .
No: Replace the canister. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H6DO)>CANISTER . After the operation is complete, go to the next step. Go to 3 .
- CHECK EVAPORATIVE EMISSION CONTROL SYSTEM
.
Perform drive cycle I. Ref. to ENGINE (DIAGNOSTICS) (H6DO)>DRIVE CYCLE>PROCEDURE>DRIVE CYCLE I .
Is DTC P1451 displayed on the display? (Current malfunction)
Yes: Replace the leak check valve assembly. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H6DO)>LEAK CHECK VALVE ASSEMBLY .
No: End.