Error Code P1457 is defined as Evaporative Emissions Control System Leakage EVAP Canister System.

This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as Honda. Specification of the definition, troubleshooting, and repairs still vary from one make and model to another.


The EVAP (evaporative emission) control system temporarily stores the vapor from the fuel tank in the EVAP canister to prevent it from escaping to the atmosphere, and to allow it to be drawn into the engine by the intake manifold vacuum and burned. Aside from that, the ORVR (onboard fueling vapor recovery system) stores fuel vapor generated when the EVAP canister is refuelling.

Thus, the EVAP control system determines faults in the components and vapor leaks for each part, which improves leak detection method for better accuracy and frequency of the detection. The EVAP control system (from the purge valve of the fuel tank) is divided into two parts; the “EVAP canister side” (from the EVAP two way valve to the purge valve) and the “Tank side” (from the EVAP two way valve to the fuel tank). There is 0.04-inch leak detection and 0.02-inch leak detection. If the 0.04-inch leak detection results are OK, the 0.02-inch leak detection runs.

Error Code P1457 is detected when there is a small leak detected from the EVAP system.

Common Symptoms

As with other error codes, this code activates the Check Engine light and registers the code to the vehicle’s memory system. There are usually no performance and drivability issues on the engine. However, in most cases, there are noticeable fuel odors caused by the release of fuel vapors.

Also, the leak detection EVAP control system is set.

Possible Causes

There are multiple causes for this code, such as:

  • Missing fuel cap
  • Use of wrong fuel filler cap
  • Foreign matter caught in fuel filler cap
  • Fuel filler cap remains open or fails to close
  • Defective EVAP canister
  • Defective purge control solenoid
  • Defective fuel tank pressure sensor

How to Check

Test the EVAP bypass solenoid valve. It’s located under the vehicle, mounted on the side of the EVAP canister.

How to Fix

This error code is really tricky to solve, due to the complexity of the components involved, and the many things that could cause the problem. Thus, your best option is to have a professional technician see and pair it for you. Most of the things he will do would be:

Replace the EVAP bypass solenoid valve.

Replace gas cap

Replace canister fuel cap and solenoid

Replace PCV valves

Replace vacuum hose torn on the EVAP end


Another probable cause for this code is that there may be corrosion, causing the EVAP to bypass the solenoid valve. The solenoid valve may get water inside. If this water contains road salt, the windings in the solenoid could corrode, causing the valve to fail.

In some instances, the corrosion could be really severe, causing internal short in solenoid valve, resulting in damage to the PCM. If this happens, both the bypass solenoid valve and the PCM must be replaced.