Honda Check Engine Light (CEL) may come on due to fault code P1457. This fault code is common on Honda Accord, Civic, Odyssey, and CR-V vehicles. Honda P1457 code is usually caused by the vent valve on the charcoal canister located under the car near the fuel tank.
Causes of P1457 Code on Honda Vehicles
If the EVAP system fails the self-test at least twice, it will turn on the check engine light (also known as CEL or MIL).
Typically code P1457 on Honda vehicles does not impact engine performance. Even though the engine runs without any performance decrease, getting code P1457 fixed as soon as possible is recommended.
- The most common problem triggering the P1457 fault is the Honda EVAP canister vent shut valve. The valve usually gets stuck due to corrosion or leaks.
- Defective 2 Way Bypass Valve.
- Damaged or crimped vacuum line to the charcoal canister
How to fix it
To fix this problem, replace the EVAP by-pass shut valve part 17310-S5A-L31. While not required, it is recommended to change the EVAP Canister simultaneously.
The cause of the problem is typically corrosion or premature failure of the canister vent shut off valve. The EVAP canister and shut off valve are located by the gas tank. They can be accessed from under the vehicle. Removal of the gas tank is not necessary.
- Jack up both rear wheels of your Honda Accord, Civic, and CR-V.
- Place jack stands to support the vehicle.
- Slide under the vehicle and locate the charcoal canister shut-off valve. A metal shield may cover the unit on some models, such as Honda CR-V.
- Remove the 13mm bolt for the metal shield. We strongly recommend spraying Penetrating Liquid on the bolts the night before the repair. This will make it easier the next day to remove the bolts.Remove the second 13mm bolt.
- Unplug the connector from the shut-off valve.
- Remove clamps from hoses. Carefully remove the hoses from the shutoff valve and charcoal canister.
- Remove the bolt that holds the shut-off valve on the canister. These bolts are usually rusted. To remove them, use vice grip pliers to remove the rusted bolts.
- Reinstall all in reverse.
Related Part Numbers
- Canister assembly: 17011-S5A-A30
- Canister vent shut valve: 17310-S5A-L31
Verify part numbers by calling the Honda dealer or by contacting the supplier.
Things you need to know
• EVAP systems can be challenging to diagnose. To properly diagnose the Honda P1457 code, you should perform a smoke test that will check the EVAP system for leaks.
• Sometimes, the screws will break off during removal, and you may need to replace the complete canister and the valve.
• Replacing the gas cap does not typically fix the Honda P1457 problem.
• Bad ECU EVAP circuits or wires can also cause code P1457 on Honda vehicles.
• You will be working near the fuel tank. Do not use a heat torch to heat up and remove the bolt.
Frequently Asked Questions
Replacing the gas cap does not typically fix the Honda P1457 code. Many Honda owners replace the gas cap when they get a P1457 fault code.
A simple test you can perform is to activate the solenoid directly. If it does not respond, it probably means the solenoid is bad.
I replaced the vent valve but P1457 keeps coming back.
If you have replaced the charcoal canister vent valve and still have the P1457 on your Honda, you must perform a smoke test. If no leaks are detected during the smoke test, you should check the wiring and the ECU.
No. The check engine light will turn off if the problem has been fixed. An EVAP system self-test will be performed in the next two driving cycles. If no problems are detected, the check engine light will turn off, and the P1457 code will change from current to stored.
This issue can impact any model year, but it most commonly affects these years: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, and 2006.
We hope you find the Honda P1457 Fault Code Problem, Cause, Solution guide helpful. Check these troubleshooting and repair guides for more help on your Honda.
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