Failed purge solenoid valve (open or shorted internal coil); Damaged or disconnected wiring harness to the purge solenoid; Corroded or loose electrical connector at the purge solenoid; Blown fuse or poor ground connection for the purge solenoid circuit; Faulty engine control module (ECM) driver for the purge solenoid, though rare; Pinched or broken vacuum hose causing the solenoid to work harder and overheat

DTC codes / Kia codes / P1457

P1457 · KiaPurge Solenoid Valve Low System Malfunction

Q: What does code P1457 mean?

Purge Solenoid Valve Low System Malfunction. P1457 on a Kia means the engine computer has detected a low-voltage or low-current condition in the purge solenoid valve circuit, which controls fuel vapor flow from the charcoal canister into the intake. The computer monitors the circuit and flags this code when the signal falls outside the expected range, indicating an open circuit, short to ground, or a failed solenoid coil.

P1457 on a Kia means the engine computer has detected a low-voltage or low-current condition in the purge solenoid valve circuit, which controls fuel vapor flow from the charcoal canister into the intake. The computer monitors the circuit and flags this code when the signal falls outside the expected range, indicating an open circuit, short to ground, or a failed solenoid coil.

SystemPowertrain

Code typeKia specific

SeverityLow

Fix difficultyIntermediate

AreaAuxiliary emission controls

Symptoms you may notice

Illuminated check engine light, often with no other noticeable symptoms
A faint fuel vapor smell around the engine bay or near the charcoal canister
Rough idle or slight hesitation when the purge valve is commanded open
Failed emissions inspection due to the check engine light
In rare cases, a slight drop in fuel economy if the valve sticks open

Common causes, most likely first

Failed purge solenoid valve (open or shorted internal coil)
Damaged or disconnected wiring harness to the purge solenoid
Corroded or loose electrical connector at the purge solenoid
Blown fuse or poor ground connection for the purge solenoid circuit
Faulty engine control module (ECM) driver for the purge solenoid, though rare
Pinched or broken vacuum hose causing the solenoid to work harder and overheat

How to diagnose and fix it

Inspect the purge solenoid connector and wiring for corrosion, looseness, or damage
Check the purge solenoid fuse and verify battery voltage at the solenoid connector with the key on
Measure the resistance of the purge solenoid coil and compare to the manufacturer's specification
Command the purge solenoid on and off with a scan tool and listen for a click, or use a test light to confirm the computer is grounding the circuit
Check for vacuum leaks or blockages in the hoses between the canister and intake manifold
If the circuit tests good but the valve does not respond, replace the purge solenoid valve
Clear the code and perform a drive cycle to verify the repair

Don't overlook the simple circuit checks

A loose or corroded connector at the purge solenoid is a very common cause of P1457 on Kia vehicles, especially after years of heat cycling and vibration.
The purge solenoid coil can test good with a multimeter but still fail under load, so a functional test with a scan tool or test light is essential before replacing parts.
A pinched vacuum hose can cause the solenoid to overheat and fail, so always inspect the hoses when replacing the valve.
This code does not always mean the solenoid itself is bad; the computer driver circuit inside the ECM can fail, though this is less common and should be diagnosed last.
Some Kia models use a purge solenoid that is part of a combined canister assembly, so verify the part before ordering.

Can I keep driving with P1457?

You can generally continue driving with P1457 because the fault mainly affects emissions and does not compromise engine safety. Avoid ignoring it for long, as a stuck-open valve can cause rough running, and the check engine light will prevent passing an emissions test.

Tools that help

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Guidance is general and written for Kia vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.