How Do I Fix A 1457 Code On A 01 Civic

P1457 Honda

P1457 Honda diagnose and prepare

The P1457 Honda trouble code refers to a leak in the evaporative emissions arrangement on the charcoal canister side of the system. Honda has issued a service bulletin #08-016 to address the P1457 Honda trouble lawmaking on the vehicles listed beneath. Honda has determined that the most likely cause is a blocked or restricted EVAP solenoid fuel vent valve.

Vehicles affected past Honda service bulletin #08-016 and P1457 Honda problem code

2001–05 Civic 2/four-Door – ALL
2002–05 Civic 3-Door – ALL
2003–05 Civic Hybrid ULEV – ALL
2002–04 CR-V – ALL

Diagnose P1457 Honda

The canister vent shut valve is located on the side of the charcoal canister. The featherbed solenoid is nether a embrace next to the canister. The solenoids are powered by a blackness/orange wire. With the key in the ON position, check for battery voltage on black/orange wires to both solenoids.

To operate the solenoids, the ECM grounds the second wire to each solenoid. With the cardinal however in the ON position, provide a ground to the greenish/cherry wire on the canister vent shut valve and check that it actually operates and holds vacuum using a handheld vacuum pump. Then remove the ground and cheque that it allows airflow.

Next, perform the same test on the blue/red wire on the bypass solenoid. If the solenoid fails to operate and either open or close, supervene upon the solenoid.If the system still sets a lawmaking afterwards solenoid replacement, acquit an EVAP simulation exam.

P1457 Honda evap system diagram

EVAP simulation exam procedure

Basis the canister vent shut valve and the bypass solenoid at the aforementioned time. Adhere digital multimeter leads to the fuel tank pressure switch (FTP) light-green wire. Clamp off the hose from the 2-way valve to the fuel tank.Then start the vehicle. The fuel tank pressure sensor should built voltage to indicate a vacuum is being fatigued on the fuel organization. Go along the test until the fuel tank pressure sensor reads 1 to 1.five volts. And so disconnect the grounds. If the voltage increases, bank check for a leak in the EVAP system. FTP voltage is 2.5 volts when there's no vacuum or pressure in the system.

If you have a bi-directional scan tool, you can control valve operation from the tool

Parts for Honda P1457

Honda service bulletin #08-016 lists updated replacement parts:

EVAP Solenoid Valve (Fuel Vent Module) Kit:
Civic – #06172-S5A-305, H/C 8808198 (Includes valve, fuel vent tubes A and B, pressure
sensor tubes A and B, and iii-way joint)

CR-V – #06172-S9A-305, H/C 8808206 (Includes valve, fuel vent tubes A, B, C, and D,
pressure sensor tubes B and C, vacuum bedchamber, 3-way joint, two tube clips, and wire clip)
Fuel Tank Unit Locknut and Base Gasket:

Civic VINs showtime with 1HG or JHM – #17046-S5A-A00, H/C 7447006
Civic VINs beginning with 2HG or SHH – #17046-S0X-A30, H/C 7647555
CR-V – #17046-S9A-A00, H/C 7758469 Fuel Feed Servant:

All models – #17711-S84-004, H/C 5433545 Fuel Pulsation Damper Washer:
CR-V merely – #16705-PD1-003, H/C 1855675 Propeller Shaft Bolts (eight required):
CR-V 4WD only – #90113-S10-000, H/C 5333125

Posted on August 7, 2019 by Rick Muscoplat