Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Dtc p1451 evap system clog detected (pipe)

ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC P1451 EVAP SYSTEM CLOG DETECTED (PIPE)

DTC DETECTING CONDITION:

Detected when two consecutive driving cycles with fault occur.

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION">, and Inspection Mode Inspection Mode > PROCEDURE">.

STEPCHECKYESNO

1.CHECK DRAIN TUBE BETWEEN CANISTER AND LEAK CHECK VALVE ASSEMBLY.

Is the drain tube between canister and leak check valve assembly clogged?

Replace the drain tube between the canister and leak check valve assembly. Canister">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1451 EVAP SYSTEM CLOG DETECTED (PIPE)">Go to Step 2.

2.CHECK HOSES BETWEEN CANISTER AND FUEL TANK.

Are the hoses between the canister and fuel tank clogged?

Replace the hoses between the canister and fuel tank. Canister"> Fuel Tank">

Replace the canister. Canister">

After the operation is complete, go to the next step. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1451 EVAP SYSTEM CLOG DETECTED (PIPE)">Go to Step 3.

3.CHECK EVAPORATIVE EMISSION CONTROL SYSTEM.

Perform drive cycle I. Drive Cycle > PROCEDURE">

Is DTC P1451 displayed on the display?

Replace the leak check valve assembly. Leak Check Valve Assembly">

End.

1. OUTLINE OF DIAGNOSIS

NOTE:

For the detection standard, refer to DTC P0455. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0455 EVAP SYSTEM (CPC) LEAK DETECTED (LARGE LEAK)">

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Other materials:

Installation
DRIVE SHAFT SYSTEM > Front Drive ShaftINSTALLATION1. Before installation, check the drive shaft assembly. Front Drive Shaft > INSPECTION">2. Replace the differential side retainer oil seal with a new part.• MT model: Differential Side Retainer Oil Seal > REPLACEMENT"> ...

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Inspection
FRONT SUSPENSION > Front StrutINSPECTIONCheck the removed part for wear, damage and cracks, and then repair or replace it if defective.1. STRUT1. Check for oil leaks.2. Move the piston rod up and down to check that it operates smoothly without any hitch.3. Check the piston rod runout.Preparation ...

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